diff --git a/lib/mongo/gridfs/chunk.rb b/lib/mongo/gridfs/chunk.rb
index a676a42..ca63cc1 100644
--- a/lib/mongo/gridfs/chunk.rb
+++ b/lib/mongo/gridfs/chunk.rb
@@ -63,7 +63,7 @@ module XGen
 
         def save
           coll = @file.chunk_collection
-          coll.remove({'_id' => @object_id}) if @object_id
+          coll.remove({'_id' => @object_id})
           coll.insert(to_mongo_object)
         end