diff --git a/mongoengine/fields.py b/mongoengine/fields.py
index 0d402712..fffba7ac 100644
--- a/mongoengine/fields.py
+++ b/mongoengine/fields.py
@@ -1465,6 +1465,9 @@ class GridFSProxy(object):
         else:
             return False
 
+    def __ne__(self, other):
+        return not self == other
+
     @property
     def fs(self):
         if not self._fs: