diff --git a/include/types.h b/include/types.h
index b10a917e1..2d819a80e 100644
--- a/include/types.h
+++ b/include/types.h
@@ -83,7 +83,6 @@ typedef wchar_t wint_t;
 #define TRUE 1
 #define FALSE 0
 
-#define nullptr 0
 #define null 0
 
 #ifndef NULL
diff --git a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/FILE_POS.C b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/FILE_POS.C
index b4b6d28d2..5abd23c4c 100644
--- a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/FILE_POS.C
+++ b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/FILE_POS.C
@@ -15,27 +15,29 @@
 
 int _ftell(FILE* file)
 {
-	int charsInUndoBuffer = 0;
-	int position;
+    int charsInUndoBuffer = 0;
+    int position;
 
-	u8 tmp_kind = file->mMode.file_kind;
-	if (!(tmp_kind == __disk_file || tmp_kind == __console_file) || file->mState.error) {
-		errno = 0x28;
-		return -1;
-	}
+    u8 tmp_kind = file->mMode.file_kind;
+    if (!(tmp_kind == __disk_file || tmp_kind == __console_file) || file->mState.error)
+    {
+        errno = 0x28;
+        return -1;
+    }
 
-	if (file->mState.io_state == __neutral)
-		return (file->mPosition);
+    if (file->mState.io_state == __neutral)
+        return (file->mPosition);
 
-	position = file->mBufferPosition + (file->mBufferPtr - file->mBuffer);
+    position = file->mBufferPosition + (file->mBufferPtr - file->mBuffer);
 
-	if (file->mState.io_state >= __rereading) {
-		charsInUndoBuffer = file->mState.io_state - __rereading + 1;
-		position -= charsInUndoBuffer;
-	}
+    if (file->mState.io_state >= __rereading)
+    {
+        charsInUndoBuffer = file->mState.io_state - __rereading + 1;
+        position -= charsInUndoBuffer;
+    }
 
-	// got added in later it seems?
-	/*if (!file->mMode.binary_io) {
+    // got added in later it seems?
+    /*if (!file->mMode.binary_io) {
 		int n = file->mBufferPtr - file->mBuffer - charsInUndoBuffer;
 		u8* p = (u8*)file->mBuffer;
 
@@ -44,87 +46,99 @@ int _ftell(FILE* file)
 				position++;
 	}*/
 
-	return (position);
+    return (position);
 }
 
 int ftell(FILE* stream)
 {
-	int retval;
+    int retval;
 
-	__begin_critical_region(stdin_access);
-	retval = (long)_ftell(stream);
-	__end_critical_region(stdin_access);
-	return retval;
+    __begin_critical_region(stdin_access);
+    retval = (long)_ftell(stream);
+    __end_critical_region(stdin_access);
+    return retval;
 }
 
-int _fseek(FILE *file, fpos_t offset, int whence)
+int _fseek(FILE* file, fpos_t offset, int whence)
 {
-	fpos_t pos;
-	__pos_proc func;
-
-	unsigned char fileKind = file->mMode.file_kind;
-	if (fileKind != 1 || file->mState.error != 0) {
-		errno = 0x28;
-		return -1;
-	}
-
-	if (file->mState.io_state == 1) {
-		if (__flush_buffer(file, nullptr) != 0) {
-			file->mState.error  = 1;
-			file->mBufferLength = 0;
-			errno                = 0x28;
-			return -1;
-		}
-	}
-
-	if (whence == SEEK_CUR) {
-		whence = SEEK_SET;
-
-		if ((pos = _ftell(file)) < 0)
-			pos = 0;
-
-		offset +=  pos;
-	}
-
-	if ((whence != SEEK_END) && (file->mMode.io_mode != 3) && (file->mState.io_state == 2 || file->mState.io_state == 3)) {
-		if ((offset >= file->mPosition) || !(offset >= file->mBufferPosition)) {
-			file->mState.io_state = 0;
-		} else {
-			file->mBufferPtr      = file->mBuffer + (offset - file->mBufferPosition);
-			file->mBufferLength   = file->mPosition - offset;
-			file->mState.io_state = 2;
-		}
-	} else {
-		file->mState.io_state = 0;
-	}
-
-	if (file->mState.io_state == 0) {
-
-		if ((func = file->positionFunc) != nullptr && func(file->mHandle, &offset, whence, file->ref_con) != 0)
-		{
-			file->mState.error = 1;
-			file->mBufferLength = 0;
-			errno = 0x28;
-			return -1;
-		}
-		else
-		{
-			file->mState.eof    = 0;
-			file->mPosition     = offset;
-			file->mBufferLength = 0;
-		}
-	}
-
-	return 0;
+    fpos_t pos;
+    __pos_proc func;
+
+    unsigned char fileKind = file->mMode.file_kind;
+    if (fileKind != 1 || file->mState.error != 0)
+    {
+        errno = 0x28;
+        return -1;
+    }
+
+    if (file->mState.io_state == 1)
+    {
+        if (__flush_buffer(file, NULL) != 0)
+        {
+            file->mState.error = 1;
+            file->mBufferLength = 0;
+            errno = 0x28;
+            return -1;
+        }
+    }
+
+    if (whence == SEEK_CUR)
+    {
+        whence = SEEK_SET;
+
+        if ((pos = _ftell(file)) < 0)
+            pos = 0;
+
+        offset += pos;
+    }
+
+    if ((whence != SEEK_END) && (file->mMode.io_mode != 3) &&
+        (file->mState.io_state == 2 || file->mState.io_state == 3))
+    {
+        if ((offset >= file->mPosition) || !(offset >= file->mBufferPosition))
+        {
+            file->mState.io_state = 0;
+        }
+        else
+        {
+            file->mBufferPtr = file->mBuffer + (offset - file->mBufferPosition);
+            file->mBufferLength = file->mPosition - offset;
+            file->mState.io_state = 2;
+        }
+    }
+    else
+    {
+        file->mState.io_state = 0;
+    }
+
+    if (file->mState.io_state == 0)
+    {
+        if ((func = file->positionFunc) != NULL &&
+            func(file->mHandle, &offset, whence, file->ref_con) != 0)
+        {
+            file->mState.error = 1;
+            file->mBufferLength = 0;
+            errno = 0x28;
+            return -1;
+        }
+        else
+        {
+            file->mState.eof = 0;
+            file->mPosition = offset;
+            file->mBufferLength = 0;
+        }
+    }
+
+    return 0;
 }
 
-int fseek(FILE *stream, fpos_t offset, int whence)
+int fseek(FILE* stream, fpos_t offset, int whence)
 {
-	fpos_t start;
-	int code;
-	start = offset;
-	__begin_critical_region(stdin_access);
-	code = _fseek(stream, start, whence); // 0 if successful, -1 if error
-	__end_critical_region(stdin_access);
-	return code;
+    fpos_t start;
+    int code;
+    start = offset;
+    __begin_critical_region(stdin_access);
+    code = _fseek(stream, start, whence); // 0 if successful, -1 if error
+    __end_critical_region(stdin_access);
+    return code;
 }
diff --git a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/ansi_files.c b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/ansi_files.c
index 84b3063ef..7f4b4708b 100644
--- a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/ansi_files.c
+++ b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/ansi_files.c
@@ -14,7 +14,7 @@ extern int __close_console(u32);
 // clang-format off
 FILE __files[4] = 
 { 
-	{ 0,                  // _00
+	{ 0,                    // _00
 		0,                  // _04, open_mode
 		1,                  // _04, io_mode
 		1,                  // _04, buffer_mode
@@ -31,7 +31,7 @@ FILE __files[4] =
 		0,                  // _10
 		0,                  // _12
 		0,                  // _14
-		0,								  // _18
+		0,					// _18
 		stdin_buff,         // _1C
 		sizeof(stdin_buff), // _20
 		stdin_buff,         // _24
@@ -39,14 +39,14 @@ FILE __files[4] =
 		0,                  // _2C
 		0,                  // _30
 		0,                  // _34
-		nullptr,            // _38
+		NULL,               // _38
 		&__read_console,    // _3C
 		&__write_console,   // _40
 		&__close_console,   // _44
 		0,                  // _48
 		&__files[1]         // _4C
 	},
-	{ 1,                   // _00
+	{ 1,                     // _00
 		0,                   // _04, open_mode
 		2,                   // _04, io_mode
 		1,                   // _04, buffer_mode
@@ -63,7 +63,7 @@ FILE __files[4] =
 		0,                   // _10
 		0,                   // _12
 		0,                   // _14
-		0,								   // _18
+		0,					 // _18
 		stdout_buff,         // _1C
 		sizeof(stdout_buff), // _20
 		stdout_buff,         // _24
@@ -71,14 +71,14 @@ FILE __files[4] =
 		0,                   // _2C
 		0,                   // _30
 		0,                   // _34
-		nullptr,             // _38
+		NULL,                // _38
 		&__read_console,     // _3C
 		&__write_console,    // _40
 		&__close_console,    // _44
 		0,                   // _48
 		&__files[2]          // _4C
 	},
-	{ 2,                   // _00
+	{ 2,                     // _00
 		0,                   // _04, open_mode
 		2,                   // _04, io_mode
 		0,                   // _04, buffer_mode
@@ -95,7 +95,7 @@ FILE __files[4] =
 		0,                   // _10
 		0,                   // _12
 		0,                   // _14
-		0,								   // _18
+		0,					 // _18
 		stderr_buff,         // _1C
 		sizeof(stderr_buff), // _20
 		stderr_buff,         // _24
@@ -103,7 +103,7 @@ FILE __files[4] =
 		0,                   // _2C
 		0,                   // _30
 		0,                   // _34
-		nullptr,             // _38
+		NULL,                // _38
 		&__read_console,     // _3C
 		&__write_console,    // _40
 		&__close_console,    // _44
@@ -135,7 +135,7 @@ void __close_all()
         {
             plast->mMode.file_kind = __unavailable_file;
             if ((p != NULL) && p->mIsDynamicallyAllocated)
-                plast->mNextFile = nullptr;
+                plast->mNextFile = NULL;
         }
     }
 
diff --git a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/file_io.c b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/file_io.c
index ae3b5d100..c28e5ca4d 100644
--- a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/file_io.c
+++ b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/file_io.c
@@ -4,90 +4,100 @@
 
 int fclose(FILE* file)
 {
-	int flush_result, close_result;
+    int flush_result, close_result;
 
-	if (file == nullptr)
-		return (-1);
-	if (file->mMode.file_kind == __closed_file)
-		return (0);
+    if (file == NULL)
+        return (-1);
+    if (file->mMode.file_kind == __closed_file)
+        return (0);
 
-	flush_result = fflush(file);
+    flush_result = fflush(file);
 
-	close_result = (*file->closeFunc)(file->mHandle);
+    close_result = (*file->closeFunc)(file->mHandle);
 
-	file->mMode.file_kind = __closed_file;
-	file->mHandle         = 0;
+    file->mMode.file_kind = __closed_file;
+    file->mHandle = 0;
 
-	if (file->mState.free_buffer)
-		free(file->mBuffer);
-	return ((flush_result || close_result) ? -1 : 0);
+    if (file->mState.free_buffer)
+        free(file->mBuffer);
+    return ((flush_result || close_result) ? -1 : 0);
 }
 
 int fflush(FILE* file)
 {
-	u32 pos;
-
-	if (file == nullptr) {
-		return __flush_all();
-	}
-
-	if (file->mState.error != 0 || file->mMode.file_kind == __closed_file) {
-		return -1;
-	}
-
-	if (file->mMode.io_mode == 1) {
-		return 0;
-	}
-
-	if (file->mState.io_state >= 3) {
-		file->mState.io_state = 2;
-	}
-
-	if (file->mState.io_state == 2) {
-		file->mBufferLength = 0;
-	}
-
-	if (file->mState.io_state != 1) {
-		file->mState.io_state = 0;
-		return 0;
-	}
-
-	if (file->mMode.file_kind != __disk_file || (pos = ftell(file)) < 0)
-		pos = 0;
-
-	if (__flush_buffer(file, 0) != 0) {
-		file->mState.error  = 1;
-		file->mBufferLength = 0;
-		return -1;
-	}
-
-	file->mState.io_state = 0;
-	file->mPosition       = pos;
-	file->mBufferLength   = 0;
-	return 0;
+    u32 pos;
+
+    if (file == NULL)
+    {
+        return __flush_all();
+    }
+
+    if (file->mState.error != 0 || file->mMode.file_kind == __closed_file)
+    {
+        return -1;
+    }
+
+    if (file->mMode.io_mode == 1)
+    {
+        return 0;
+    }
+
+    if (file->mState.io_state >= 3)
+    {
+        file->mState.io_state = 2;
+    }
+
+    if (file->mState.io_state == 2)
+    {
+        file->mBufferLength = 0;
+    }
+
+    if (file->mState.io_state != 1)
+    {
+        file->mState.io_state = 0;
+        return 0;
+    }
+
+    if (file->mMode.file_kind != __disk_file || (pos = ftell(file)) < 0)
+        pos = 0;
+
+    if (__flush_buffer(file, 0) != 0)
+    {
+        file->mState.error = 1;
+        file->mBufferLength = 0;
+        return -1;
+    }
+
+    file->mState.io_state = 0;
+    file->mPosition = pos;
+    file->mBufferLength = 0;
+    return 0;
 }
 
-int __msl_strnicmp(const char *s1, const char *s2, int n)
+int __msl_strnicmp(const char* s1, const char* s2, int n)
 {
-	int i;
-	char c1, c2;
-
-	for (i = 0; i < n; i++) {
-		c1 = tolower(*s1++);
-		c2 = tolower(*s2++);
-
-		if(c1 < c2) {
-			return -1;
-		}
-
-		if (c1 > c2) {
-			return 1;
-		}
-
-		if(c1 == '\0') {
-			return 0;
-		}
-	}
-	return 0;
-	
+    int i;
+    char c1, c2;
+
+    for (i = 0; i < n; i++)
+    {
+        c1 = tolower(*s1++);
+        c2 = tolower(*s2++);
+
+        if (c1 < c2)
+        {
+            return -1;
+        }
+
+        if (c1 > c2)
+        {
+            return 1;
+        }
+
+        if (c1 == '\0')
+        {
+            return 0;
+        }
+    }
+    return 0;
 }
diff --git a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/wchar_io.c b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/wchar_io.c
index da6a0378a..67a8ab47f 100644
--- a/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/wchar_io.c
+++ b/src/PowerPC_EABI_Support/src/MSL_C/MSL_Common/wchar_io.c
@@ -8,75 +8,76 @@
 
 void putwc(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void putwchar(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void fputwc(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void getwc(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void getwchar(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void fgetwc(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void ungetwc(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void fputws(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 void fgetws(void)
 {
-	// UNUSED FUNCTION
+    // UNUSED FUNCTION
 }
 
 int fwide(FILE* stream, int mode)
 {
-	int res;
-	int orientation;
-
-	if (stream == nullptr || stream->mMode.file_kind == __closed_file)
-		return 0;
-
-	orientation = stream->mMode.file_orientation;
-	switch (orientation) {
-	case __unoriented:
-		if (mode > 0)
-			stream->mMode.file_orientation = __wide_oriented;
-		else if (mode < 0)
-			stream->mMode.file_orientation = __char_oriented;
-
-		res = mode;
-		break;
-
-	case __wide_oriented:
-		res = 1;
-		break;
-
-	case __char_oriented:
-		res = -1;
-		break;
-	}
-	return res;
+    int res;
+    int orientation;
+
+    if (stream == NULL || stream->mMode.file_kind == __closed_file)
+        return 0;
+
+    orientation = stream->mMode.file_orientation;
+    switch (orientation)
+    {
+    case __unoriented:
+        if (mode > 0)
+            stream->mMode.file_orientation = __wide_oriented;
+        else if (mode < 0)
+            stream->mMode.file_orientation = __char_oriented;
+
+        res = mode;
+        break;
+
+    case __wide_oriented:
+        res = 1;
+        break;
+
+    case __char_oriented:
+        res = -1;
+        break;
+    }
+    return res;
 }
diff --git a/src/SB/Game/zMain.cpp b/src/SB/Game/zMain.cpp
index 274fffb15..98fed79aa 100644
--- a/src/SB/Game/zMain.cpp
+++ b/src/SB/Game/zMain.cpp
@@ -619,7 +619,8 @@ void zMainShowProgressBar()
         strcpy(acStack_8c, loadingText);
         acStack_8c[progBar] = '\0';
         memcpy(formattedStr, &loadingText[progBar], strlen(loadingText) - progBar);
-        sprintf(auStack_cc, "{font=0}{h*2}{w*2}%s{color=FFFFFFFF}%s{~:c}", acStack_8c, formattedStr);
+        sprintf(auStack_cc, "{font=0}{h*2}{w*2}%s{color=FFFFFFFF}%s{~:c}", acStack_8c,
+                formattedStr);
         zMainMemCardRenderText(auStack_cc, '\x01');
         percentageDone += 10;
     }
@@ -760,7 +761,7 @@ void zMainMemCardSpaceQuery()
 
 static void zMainMemCardQueryPost(S32 needed, S32 available, S32 neededFiles, S32 unk0)
 {
-    RwCamera* cam = nullptr;
+    RwCamera* cam = NULL;
     RwRGBA colour = {};
     RwInt32 clearMode = 3;
 
@@ -775,7 +776,7 @@ static void zMainMemCardQueryPost(S32 needed, S32 available, S32 neededFiles, S3
 
 void zMainMemCardRenderText(const char* a, bool enabled)
 {
-    RwCamera* cam = nullptr;
+    RwCamera* cam = NULL;
     RwRGBA colour = {};
     RwInt32 clearMode = 3;
 
diff --git a/src/dolphin/src/card/CARDCheck.c b/src/dolphin/src/card/CARDCheck.c
index 9d0771cc9..74d4032db 100644
--- a/src/dolphin/src/card/CARDCheck.c
+++ b/src/dolphin/src/card/CARDCheck.c
@@ -397,10 +397,10 @@ s32 CARDCheck(s32 channel)
 
     result = CARDCheckExAsync(channel, &xferBytes, __CARDSyncCallback);
 
-    if (result < 0 || &xferBytes == nullptr)
+    if (result < 0 || &xferBytes == NULL)
     {
         return result;
     }
 
     return __CARDSync(channel);
-}
\ No newline at end of file
+}
diff --git a/src/dolphin/src/os/OSFont.c b/src/dolphin/src/os/OSFont.c
index a02673de6..e874f0324 100644
--- a/src/dolphin/src/os/OSFont.c
+++ b/src/dolphin/src/os/OSFont.c
@@ -421,7 +421,7 @@ u32 OSLoadFont(OSFontHeader* fontInfo, void* temp)
     u8* ptr;
     int fontCodeT, sheet, numChars, row, column, x, y;
 
-    u32 fontSize = ReadFont(temp, OS_FONT_ENCODE_SJIS, nullptr);
+    u32 fontSize = ReadFont(temp, OS_FONT_ENCODE_SJIS, NULL);
     if (fontSize)
     {
         Decode(temp, (void*)fontInfo);
diff --git a/src/dolphin/src/os/OSThread.c b/src/dolphin/src/os/OSThread.c
index 4d3dddf37..2d2adf809 100644
--- a/src/dolphin/src/os/OSThread.c
+++ b/src/dolphin/src/os/OSThread.c
@@ -305,8 +305,8 @@ static OSThread* SelectThread(BOOL yield)
 
     if (RunQueueBits == 0)
     {
-        SwitchThreadCallback(__OSCurrentThread, nullptr);
-        __OSCurrentThread = nullptr;
+        SwitchThreadCallback(__OSCurrentThread, NULL);
+        __OSCurrentThread = NULL;
         OSSetCurrentContext(&IdleContext);
         do
         {
diff --git a/src/dolphin/src/vi/vi.c b/src/dolphin/src/vi/vi.c
index 9d47b7d89..9399b4939 100644
--- a/src/dolphin/src/vi/vi.c
+++ b/src/dolphin/src/vi/vi.c
@@ -270,7 +270,7 @@ static VITimingInfo* getTiming(VITVMode mode)
         return &timing[9];
     }
 
-    return nullptr;
+    return NULL;
 }
 
 void __VIInit(VITVMode mode)
@@ -469,8 +469,8 @@ void VIInit(void)
     value = (((u32)(value)) & ~0x00008000) | (((0)) << 15);
     __VIRegs[VI_DISP_INT_1] = value;
 
-    PreCB = nullptr;
-    PostCB = nullptr;
+    PreCB = NULL;
+    PostCB = NULL;
 
     __OSSetInterruptHandler(24, __VIRetraceHandler);
     __OSUnmaskInterrupts((0x80000000u >> (24)));
diff --git a/src/runtime_libs/debugger/embedded/MetroTRK/Os/dolphin/dolphin_trk_glue.c b/src/runtime_libs/debugger/embedded/MetroTRK/Os/dolphin/dolphin_trk_glue.c
index 21a02e78b..1b2bc2771 100644
--- a/src/runtime_libs/debugger/embedded/MetroTRK/Os/dolphin/dolphin_trk_glue.c
+++ b/src/runtime_libs/debugger/embedded/MetroTRK/Os/dolphin/dolphin_trk_glue.c
@@ -10,7 +10,7 @@ s32 gReadCount;
 s32 gReadPos;
 s32 gWritePos;
 
-DBCommTable gDBCommTable = { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr };
+DBCommTable gDBCommTable = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 
 /*
  * --INFO--