diff --git a/sc2/src/sc2code/libs/sound/mixsdl/music.c b/sc2/src/sc2code/libs/sound/mixsdl/music.c
index 120e69798..e88b78cc8 100644
--- a/sc2/src/sc2code/libs/sound/mixsdl/music.c
+++ b/sc2/src/sc2code/libs/sound/mixsdl/music.c
@@ -35,7 +35,7 @@ PLRPlaySong (MUSIC_REF MusicRef, BOOLEAN Continuous, BYTE Priority)
 	{
 		LockMutex (soundSource[MUSIC_SOURCE].stream_mutex);
 		PlayStream ((*pmus), MUSIC_SOURCE, Continuous, 
-			speechVolumeScale != 0.0f);
+			speechVolumeScale == 0.0f);
 		UnlockMutex (soundSource[MUSIC_SOURCE].stream_mutex);
 		
 		curMusicRef = MusicRef;