diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 91130fbc6913e534e37d188109eb03a1801acfae..3637a62ddeb425ed3414230936df60bef9808a6d 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -131,16 +131,13 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w,
 	case SND_SOC_DAPM_POST_PMU:
 		/* change mic bias resistor to 4Kohm */
 		snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
-				SGTL5000_BIAS_R_4k, SGTL5000_BIAS_R_4k);
+				SGTL5000_BIAS_R_MASK,
+				SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT);
 		break;
 
 	case SND_SOC_DAPM_PRE_PMD:
-		/*
-		 * SGTL5000_BIAS_R_8k as mask to clean the two bits
-		 * of mic bias and output impedance
-		 */
 		snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
-				SGTL5000_BIAS_R_8k, 0);
+				SGTL5000_BIAS_R_MASK, 0);
 		break;
 	}
 	return 0;