diff --git a/activesupport/lib/active_support/rescuable.rb b/activesupport/lib/active_support/rescuable.rb
index 0fbe6e5b2973669817ae327cc4ef252805acc11f..85e84bc2036077f2e2488b9ea15425c84bd61dfa 100644
--- a/activesupport/lib/active_support/rescuable.rb
+++ b/activesupport/lib/active_support/rescuable.rb
@@ -111,7 +111,7 @@ def handler_for_rescue(exception)
         if rescuer.arity == 0
           Proc.new { instance_exec(&rescuer) }
         else
-          Proc.new { |exception| instance_exec(exception, &rescuer) }
+          Proc.new { |_exception| instance_exec(_exception, &rescuer) }
         end
       end
     end