diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index ae8d076..fdffc4d 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -28,11 +28,7 @@
  *  http://www.ietf.org/rfc/rfc4346.txt
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_SSL_TLS_C)