diff --git a/stepmania/src/UnlockManager.h b/stepmania/src/UnlockManager.h
index 7350d0dfcb..7337b288b6 100644
--- a/stepmania/src/UnlockManager.h
+++ b/stepmania/src/UnlockManager.h
@@ -1,7 +1,7 @@
 /* UnlockManager - Unlocks handling. */
 
-#ifndef UNLOCK_SYSTEM_H
-#define UNLOCK_SYSTEM_H
+#ifndef UNLOCK_MANAGER_H
+#define UNLOCK_MANAGER_H
 
 #include "Grade.h"
 #include "Command.h"