diff --git a/libn3ds/source/arm11/drivers/codec.c b/libn3ds/source/arm11/drivers/codec.c
index 14266f1..9081982 100644
--- a/libn3ds/source/arm11/drivers/codec.c
+++ b/libn3ds/source/arm11/drivers/codec.c
@@ -762,11 +762,12 @@ bool CODEC_getRawAdcData(CdcAdcData *data)
 void CODEC_soundSwitchOutput(void)
 {
 	static u8 headset = 0;
-	u8 state = readReg(CDC_REG_100_44) & 3u;
+	u8 state = readReg(CDC_REG_100_44) & 1u;
 	if( state != headset )
 	{
 		headset = state;
-		if( headset ) maskReg( CDC_REG_HEADSET_SEL, HEADSET_SEL_HP, 0xff);
-		else maskReg( CDC_REG_HEADSET_SEL, HEADSET_SEL_SP, 0xff);
+		// see: forceAudioOutput@Luma3DS/sysmodules/rosalina/source/shell.c
+		if( headset ) maskReg( CDC_REG_HEADSET_SEL, 0x30, 0xff);
+		else maskReg( CDC_REG_HEADSET_SEL, 0x20, 0xff);
 	}
-}
\ No newline at end of file
+}