diff --git a/library/nist_kw.c b/library/nist_kw.c
index 03e8072..f6ee486 100644
--- a/library/nist_kw.c
+++ b/library/nist_kw.c
@@ -29,11 +29,7 @@
  * the wrapping and unwrapping operation than the definition in NIST SP 800-38F.
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_NIST_KW_C)