diff --git a/library/rsa_internal.c b/library/rsa_internal.c
index 9a42d47..b4098f4 100644
--- a/library/rsa_internal.c
+++ b/library/rsa_internal.c
@@ -20,11 +20,7 @@
  *
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_RSA_C)