diff --git a/ac108.c b/ac108.c
index cafc10e..c4b79c2 100644
--- a/ac108.c
+++ b/ac108.c
@@ -840,7 +840,7 @@ static int ac108_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_h
 	 * ADC Sample Rate synchronised with I2S1 clock zone 
 	 */
 	ac108_multi_chips_update_bits(ADC_SPRC, 0x0f << ADC_FS_I2S1, ac108_sample_rate[rate].reg_val << ADC_FS_I2S1, ac108);
-
+	ac108_multi_chips_write(HPF_EN,0x0f,ac108);
 	ac108_configure_clocking(ac108, rate);
 	return 0;
 }