diff --git a/stepmania/src/GameSoundManager.cpp b/stepmania/src/GameSoundManager.cpp
index c08e637e99..154fc28e9d 100644
--- a/stepmania/src/GameSoundManager.cpp
+++ b/stepmania/src/GameSoundManager.cpp
@@ -498,6 +498,8 @@ void GameSoundManager::PlayMusic( const CString &file, TimingData *pTiming, bool
 		ToPlay->HasTiming = true;
 		ToPlay->timing_data = *pTiming;
 	}
+	else
+		ToPlay->timing_file = SetExtension( file, "sm" );
 
 	ToPlay->force_loop = force_loop;
 	ToPlay->start_sec = start_sec;