diff --git a/lib/reline/kill_ring.rb b/lib/reline/kill_ring.rb
old mode 100644
new mode 100755
index bb3684b42b..84d94a7ff6
--- a/lib/reline/kill_ring.rb
+++ b/lib/reline/kill_ring.rb
@@ -14,7 +14,7 @@ class Reline::KillRing
     end
 
     def ==(other)
-      object_id == other.object_id
+      equal?(other)
     end
   end