diff --git a/activesupport/test/rescuable_test.rb b/activesupport/test/rescuable_test.rb
index 2289a825db0..ff77e16eddd 100644
--- a/activesupport/test/rescuable_test.rb
+++ b/activesupport/test/rescuable_test.rb
@@ -7,9 +7,6 @@ class NuclearExplosion < StandardError
 end
 
 class MadRonon < StandardError
-  def initialize(message)
-    super(message)
-  end
 end
 
 class Stargate