diff --git a/module_usb_audio/pdm_mics/pcm_pdm_mic.xc b/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
index 7a791eb0..b46fe96d 100644
--- a/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
+++ b/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
@@ -59,7 +59,7 @@ void pdm_process(streaming chanend c_ds_output_0, streaming chanend c_ds_output_
 
         while(1)
         {
-            frame_audio * unsafe current = decimator_get_next_audio_frame(c_ds_output_0, c_ds_output_1, buffer, mic_audio);
+            frame_audio * unsafe current = decimator_get_next_audio_frame(c_ds_output_0, c_ds_output_1, buffer, mic_audio, 2);
 
             unsafe
             {