diff --git a/library/cmac.c b/library/cmac.c
index 2d23be5..3a48a62 100644
--- a/library/cmac.c
+++ b/library/cmac.c
@@ -40,11 +40,7 @@
  *
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_CMAC_C)