diff --git a/src/archutils/Darwin/StepMania.pch b/src/archutils/Darwin/StepMania.pch
index 7d2d90ecb3..b4d1a77da6 100644
--- a/src/archutils/Darwin/StepMania.pch
+++ b/src/archutils/Darwin/StepMania.pch
@@ -2,5 +2,6 @@
 
 // Only do this for c++ files.
 #ifdef __cplusplus
-# include "global.h"
+#include "global.h"
+#include <map>
 #endif