diff --git a/src/crc_test.c b/src/crc_test.c
index 3bc6868..d46d0cc 100644
--- a/src/crc_test.c
+++ b/src/crc_test.c
@@ -17,6 +17,8 @@
  */
 #include <stdio.h>
 
+#include <osmocom/core/bits.h>
+
 #include "tetra_common.h"
 #include <lower_mac/crc_simple.h>