diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 921a749..5d4033c 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -723,6 +723,8 @@
  *
  * \note  This option only works for Short Weierstrass curves.
  *
+ * Requires: MBEDTLS_ECP_C
+ *
  * Uncomment this macro to enable restartable ECC computations.
  */
 //#define MBEDTLS_ECP_RESTARTABLE