diff --git a/library/ecp.c b/library/ecp.c
index 9522edf..b00816a 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -41,11 +41,7 @@
  *     <http://eprint.iacr.org/2004/342.pdf>
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 /**
  * \brief Function level alternative implementation.