diff --git a/src/gb/io.c b/src/gb/io.c
index 25ca02602..c6ad66c36 100644
--- a/src/gb/io.c
+++ b/src/gb/io.c
@@ -609,7 +609,7 @@ uint8_t GBIORead(struct GB* gb, unsigned address) {
 	case GB_REG_WAVE_F:
 		if (gb->audio.playingCh3) {
 			GBAudioRun(&gb->audio, mTimingCurrentTime(gb->audio.timing), 0x4);
-			if (gb->audio.ch3.readable || gb->audio.style != GB_AUDIO_DMG) {
+			if (gb->audio.ch3.readable || gb->audio.style == GB_AUDIO_CGB) {
 				return gb->audio.ch3.wavedata8[gb->audio.ch3.window >> 1];
 			} else {
 				return 0xFF;