diff --git a/module_usb_audio/audio_io/audio_io.xc b/module_usb_audio/audio_io/audio_io.xc
index c7fa6997..afbe6818 100755
--- a/module_usb_audio/audio_io/audio_io.xc
+++ b/module_usb_audio/audio_io/audio_io.xc
@@ -20,6 +20,7 @@
 #include "xua_audio.h"
 #include "audioports.h"
 #include "audiohw.h"
+#include "mic_array_conf.h"
 #ifdef SPDIF_TX
 #include "SpdifTransmit.h"
 #endif
@@ -521,7 +522,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
 #endif /* (AUD_TO_USB_RATIO > 1) */
 
 
-#if (NUM_PDM_MICS > 0)
+#if ((DEBUG_MIC_ARRAY == 1) && (NUM_PDM_MICS > 0))
     /* Get initial samples from PDM->PCM converter to avoid stalling the decimators */
     c_pdm_pcm <: 1;
     master
@@ -532,7 +533,7 @@ unsigned static deliver(chanend c_out, chanend ?c_spd_out,
             c_pdm_pcm :> samplesIn[readBuffNo][i];
         }
     }
-#endif // (NUM_PDM_MICS > 0)
+#endif // ((DEBUG_MIC_ARRAY == 1) && (NUM_PDM_MICS > 0))
 
     UserBufferManagementInit(i_audMan);