diff --git a/lib/rack/error_handler.rb b/lib/rack/error_handler.rb
index 1426ff726..f949d4f93 100644
--- a/lib/rack/error_handler.rb
+++ b/lib/rack/error_handler.rb
@@ -19,11 +19,11 @@ def log_error(env, error)
     end
 
     def bad_request(error)
-      [400, {}, ["Bad Request: #{error.class}"]]
+      [400, {}, ["Bad Request"]]
     end
 
     def internal_server_error(error)
-      [500, {}, ["Internal Server Error: #{error.class}"]]
+      [500, {}, ["Internal Server Error"]]
     end
 
     def call(env)
diff --git a/test/spec_error_handler.rb b/test/spec_error_handler.rb
index 8d3b5659c..5df50f2d2 100644
--- a/test/spec_error_handler.rb
+++ b/test/spec_error_handler.rb
@@ -23,7 +23,7 @@
     response = middleware.call(Rack::MockRequest.env_for("/"))
 
     response[0].must_equal 400
-    response[2].to_ary.must_equal ["Bad Request: #{error}"]
+    response[2].to_ary.must_equal ["Bad Request"]
   end
 
   it "catches standard errors as 500 Internal Server Error" do
@@ -37,7 +37,7 @@
     response = middleware.call(Rack::MockRequest.env_for("/"))
 
     response[0].must_equal 500
-    response[2].to_ary.must_equal ["Internal Server Error: #{error}"]
+    response[2].to_ary.must_equal ["Internal Server Error"]
   end
 
   it "logs errors to the rack.errors stream" do
@@ -52,6 +52,6 @@
     errors.string.must_match(/b00m/)
 
     response[0].must_equal 500
-    response[2].to_ary.must_equal ["Internal Server Error: RuntimeError"]
+    response[2].to_ary.must_equal ["Internal Server Error"]
   end
 end