diff --git a/test/spec_lint.rb b/test/spec_lint.rb
index f83def21e..33d3204e2 100755
--- a/test/spec_lint.rb
+++ b/test/spec_lint.rb
@@ -268,16 +268,6 @@ def obj.fatal(*) end
       Rack::Lint.new(nil).call(env("rack.response_finished" => [-> () {}]))
     }.must_raise(Rack::Lint::LintError).
     message.must_match(/rack.response_finished values must accept an env argument/)
-
-    callable_object = Class.new do
-      def call
-      end
-    end.new
-
-    lambda {
-      Rack::Lint.new(nil).call(env("rack.response_finished" => [callable_object]))
-    }.must_raise(Rack::Lint::LintError).
-    message.must_match(/rack.response_finished values must accept an env argument/)
   end
 
   it "notice input errors" do