diff --git a/common/str.cpp b/common/str.cpp
index 6ac23126b45..9d5d9e7c2c0 100644
--- a/common/str.cpp
+++ b/common/str.cpp
@@ -20,7 +20,9 @@
  */
 
 #include "common/stdafx.h"
+
 #include "common/str.h"
+#include "common/util.h"
 
 #include <ctype.h>