diff --git a/discordpp/CONSTRUCTIN/FROMJSON.hh b/discordpp/CONSTRUCTIN/FROMJSON.hh
index f40fe64..1733c3b 100644
--- a/discordpp/CONSTRUCTIN/FROMJSON.hh
+++ b/discordpp/CONSTRUCTIN/FROMJSON.hh
@@ -21,9 +21,9 @@
         std::vector<snowflake> sfs;                                            \
         auto jk = j[key];                                                      \
         std::transform(jk.begin(), jk.end(), std::back_inserter(sfs),          \
-                       [&key](const json &j) {                                 \
+                       [](const json &j) {                                     \
                            snowflake sf;                                       \
-                           std::istringstream(j[key].get<std::string>()) >>    \
+                           std::istringstream(j.get<std::string>()) >>         \
                                sf;                                             \
                            return sf;                                          \
                        });                                                     \
diff --git a/discordpp/constructs/todo.hh b/discordpp/constructs/todo.hh
index 10c7103..e33a442 100644
--- a/discordpp/constructs/todo.hh
+++ b/discordpp/constructs/todo.hh
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <nlohmann/json.hpp>
+
 namespace discordpp {
 using json = nlohmann::json;
 
diff --git a/discordpp/util/construct.hh b/discordpp/util/construct.hh
index 19ad13f..cba1ea8 100644
--- a/discordpp/util/construct.hh
+++ b/discordpp/util/construct.hh
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <optional>
+
 namespace discordpp {
 using json = nlohmann::json;
 template <typename T> using opt = std::optional<T>;