diff --git a/libraries/wutnewlib/wut_reent.c b/libraries/wutnewlib/wut_reent.c
index 285b1e0d1..624e67fb5 100644
--- a/libraries/wutnewlib/wut_reent.c
+++ b/libraries/wutnewlib/wut_reent.c
@@ -1,6 +1,7 @@
 #include "wut_newlib.h"
 #include "wut_thread_specific.h"
 #include <stdlib.h>
+#include <string.h>
 
 #include <coreinit/thread.h>