diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 1d61455..53044ba 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -17,11 +17,7 @@
  *  limitations under the License.
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)