diff --git a/Math/MAT3mat.c b/Math/MAT3mat.c
index 42ba9814..f25310f0 100644
--- a/Math/MAT3mat.c
+++ b/Math/MAT3mat.c
@@ -9,9 +9,12 @@
 #include <Math/mat3defs.h>
 
 #ifdef WIN32
-#include <memory.h>      /* required for memset() and memcpy() */
+#  include <memory.h>      /* required for memset() and memcpy() */
+#elif __MWERKS__
+#  include <string.h>      /* MetroWerks CodeWarrior: memset() & memcpy() */
 #endif
 
+
 /* #include "macros.h" */
 
 /* --------------------------  Static Routines	---------------------------- */