diff --git a/stepmania/src/ThemeMetric.h b/stepmania/src/ThemeMetric.h
index 53c5f8a802..f047635aeb 100644
--- a/stepmania/src/ThemeMetric.h
+++ b/stepmania/src/ThemeMetric.h
@@ -7,6 +7,7 @@
 #include <map>
 #include "Foreach.h"
 #include "LuaManager.h"
+#include "RageUtil.h"
 
 class IThemeMetric
 {