diff --git a/library/md2.c b/library/md2.c
index 82aed8e..afc6539 100644
--- a/library/md2.c
+++ b/library/md2.c
@@ -25,11 +25,7 @@
  *  http://www.ietf.org/rfc/rfc1319.txt
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_MD2_C)