diff --git a/MultiSource/Applications/ALAC/decode/CMakeLists.txt b/MultiSource/Applications/ALAC/decode/CMakeLists.txt
index a591011ece..c7a289a99a 100644
--- a/MultiSource/Applications/ALAC/decode/CMakeLists.txt
+++ b/MultiSource/Applications/ALAC/decode/CMakeLists.txt
@@ -5,6 +5,12 @@ else()
   list(APPEND CFLAGS -DTARGET_RT_BIG_ENDIAN=1)
   list(APPEND CXXFLAGS -DTARGET_RT_BIG_ENDIAN=1)
 endif()
+
+if("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "sparc")
+  list(APPEND CFLAGS -DUNALIGNED_MEM_ACCESS_NOT_SUPPORTED)
+  list(APPEND CXXFLAGS -DUNALIGNED_MEM_ACCESS_NOT_SUPPORTED)
+endif()
+
 set(RUN_OPTIONS - - < tune.caf)
 llvm_multisource(alacconvert-decode
   EndianPortable.c
diff --git a/MultiSource/Applications/ALAC/encode/CMakeLists.txt b/MultiSource/Applications/ALAC/encode/CMakeLists.txt
index e2af09de97..3beed5a3f5 100644
--- a/MultiSource/Applications/ALAC/encode/CMakeLists.txt
+++ b/MultiSource/Applications/ALAC/encode/CMakeLists.txt
@@ -5,6 +5,12 @@ else()
   list(APPEND CFLAGS -DTARGET_RT_BIG_ENDIAN=1)
   list(APPEND CXXFLAGS -DTARGET_RT_BIG_ENDIAN=1)
 endif()
+
+if("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "sparc")
+  list(APPEND CFLAGS -DUNALIGNED_MEM_ACCESS_NOT_SUPPORTED)
+  list(APPEND CXXFLAGS -DUNALIGNED_MEM_ACCESS_NOT_SUPPORTED)
+endif()
+
 set(RUN_OPTIONS - - < tune.wav)
 llvm_multisource(alacconvert-encode
   EndianPortable.c