diff --git a/desmume/src/utils/colorspacehandler/colorspacehandler_AVX2.cpp b/desmume/src/utils/colorspacehandler/colorspacehandler_AVX2.cpp
index 56f1fe4aa..a5d272411 100644
--- a/desmume/src/utils/colorspacehandler/colorspacehandler_AVX2.cpp
+++ b/desmume/src/utils/colorspacehandler/colorspacehandler_AVX2.cpp
@@ -21,6 +21,7 @@
 	#error This code requires AVX2 support.
 #else
 
+#include <string.h>
 #include <immintrin.h>
 
 template <bool SWAP_RB>
diff --git a/desmume/src/utils/colorspacehandler/colorspacehandler_AltiVec.cpp b/desmume/src/utils/colorspacehandler/colorspacehandler_AltiVec.cpp
index 6d8eb217e..9d6ed773d 100644
--- a/desmume/src/utils/colorspacehandler/colorspacehandler_AltiVec.cpp
+++ b/desmume/src/utils/colorspacehandler/colorspacehandler_AltiVec.cpp
@@ -21,6 +21,8 @@
 	#error This code requires PowerPC AltiVec support.
 #else
 
+#include <string.h>
+
 template <bool SWAP_RB>
 FORCEINLINE void ColorspaceConvert555To8888_AltiVec(const v128u16 &srcColor, const v128u32 &srcAlphaBits32Lo, const v128u32 &srcAlphaBits32Hi, v128u32 &dstLo, v128u32 &dstHi)
 {
diff --git a/desmume/src/utils/colorspacehandler/colorspacehandler_SSE2.cpp b/desmume/src/utils/colorspacehandler/colorspacehandler_SSE2.cpp
index 1a85b6d10..920faa16d 100644
--- a/desmume/src/utils/colorspacehandler/colorspacehandler_SSE2.cpp
+++ b/desmume/src/utils/colorspacehandler/colorspacehandler_SSE2.cpp
@@ -17,12 +17,11 @@
 
 #include "colorspacehandler_SSE2.h"
 
-#include <string.h>
-
 #ifndef ENABLE_SSE2
 	#error This code requires SSE2 support.
 #else
 
+#include <string.h>
 #include <emmintrin.h>
 
 #ifdef ENABLE_SSSE3