diff --git a/module_usb_audio/pdm_mics/pcm_pdm_mic.xc b/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
index 94e65c71..cfa13e4c 100644
--- a/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
+++ b/module_usb_audio/pdm_mics/pcm_pdm_mic.xc
@@ -13,7 +13,6 @@
 #include <xclib.h>
 #include <stdint.h>
 
-#include "fir_decimator.h"
 #include "mic_array.h"
 
 #define MAX_DECIMATION_FACTOR 12