diff --git a/source/MongoDB/Linq/MongoQueryProvider.cs b/source/MongoDB/Linq/MongoQueryProvider.cs
index e20cdf33..8ff8ae34 100644
--- a/source/MongoDB/Linq/MongoQueryProvider.cs
+++ b/source/MongoDB/Linq/MongoQueryProvider.cs
@@ -245,7 +245,8 @@ private object ExecuteFind(MongoQueryObject queryObject)
                 spec = queryObject.Query;
 
             cursorType.GetMethod("Spec", new[] { typeof(Document) }).Invoke(cursor, new object[] { spec });
-            cursorType.GetMethod("Fields", new[] { typeof(Document) }).Invoke(cursor, new object[] { queryObject.Fields });
+            if(queryObject.Fields.Count > 0)
+                cursorType.GetMethod("Fields", new[] { typeof(Document) }).Invoke(cursor, new object[] { queryObject.Fields });
             cursorType.GetMethod("Limit").Invoke(cursor, new object[] { queryObject.NumberToLimit });
             cursorType.GetMethod("Skip").Invoke(cursor, new object[] { queryObject.NumberToSkip });