diff --git a/lib/misc_utils/extract_cmc_impl.cc b/lib/misc_utils/extract_cmc_impl.cc
index 96e04d6..16f2f6b 100644
--- a/lib/misc_utils/extract_cmc_impl.cc
+++ b/lib/misc_utils/extract_cmc_impl.cc
@@ -26,7 +26,7 @@
 
 #include <gnuradio/io_signature.h>
 #include <grgsm/gsmtap.h>
-#include <unistd.h>
+//#include <unistd.h>
 #include <grgsm/endian.h>
 
 #include "extract_cmc_impl.h"