diff --git a/lib/grant-types/refresh-token-grant-type.js b/lib/grant-types/refresh-token-grant-type.js
index 19f9010c2..b36545128 100644
--- a/lib/grant-types/refresh-token-grant-type.js
+++ b/lib/grant-types/refresh-token-grant-type.js
@@ -100,7 +100,7 @@ RefreshTokenGrantType.prototype.getRefreshToken = function(request, client) {
         throw new ServerError('Server error: `getRefreshToken()` did not return a `user` object');
       }
 
-      if (token.client.id !== client.id) {
+      if (token.client.clientId !== client.clientId) {
         throw new InvalidGrantError('Invalid grant: refresh token is invalid');
       }