diff --git a/module_usb_audio/pdm_mics/pdm_mic.xc b/module_usb_audio/pdm_mics/pdm_mic.xc
index 2e3d7b7c..37953754 100644
--- a/module_usb_audio/pdm_mics/pdm_mic.xc
+++ b/module_usb_audio/pdm_mics/pdm_mic.xc
@@ -215,9 +215,9 @@ void pdm_mic(streaming chanend c_ds_output[2])
     par
     {
         mic_array_pdm_rx(p_pdm_mics, c_4x_pdm_mic_0, c_4x_pdm_mic_1);
-        mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_0, c_ds_output[0]);
+        mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_0, c_ds_output[0], MIC_ARRAY_NO_INTERNAL_CHANS);
 #if (NUM_PDM_MICS > 4)
-        mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_1, c_ds_output[1]);
+        mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_1, c_ds_output[1], MIC_ARRAY_NO_INTERNAL_CHANS);
 #endif
     }
 }