diff --git a/library/md5.c b/library/md5.c
index 2306855..c7b85d1 100644
--- a/library/md5.c
+++ b/library/md5.c
@@ -24,11 +24,7 @@
  *  http://www.ietf.org/rfc/rfc1321.txt
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_MD5_C)