diff --git a/stepmania/src/Player.h b/stepmania/src/Player.h
index 2ebf395d5f..8a59380654 100644
--- a/stepmania/src/Player.h
+++ b/stepmania/src/Player.h
@@ -12,6 +12,7 @@
 #include "AttackDisplay.h"
 #include "NoteData.h"
 #include "ScreenMessage.h"
+#include "ThemeMetric.h"
 
 class ScoreDisplay;
 class LifeMeter;