1 files changed, 3 insertions, 3 deletions
diff --git a/actionpack/test/controller/webservice_test.rb b/actionpack/test/controller/webservice_test.rb
index 4a10637b54..23a46df5cd 100644
--- a/actionpack/test/controller/webservice_test.rb
+++ b/actionpack/test/controller/webservice_test.rb
@@ -14,7 +14,7 @@ class WebServiceTest < ActionDispatch::IntegrationTest
     end
 
     def dump_params_keys(hash = params)
-      hash.keys.sort.inject("") do |s, k|
+      hash.keys.sort.each_with_object(+"") do |k, s|
         value = hash[k]
 
         if value.is_a?(Hash) || value.is_a?(ActionController::Parameters)
@@ -23,8 +23,8 @@ class WebServiceTest < ActionDispatch::IntegrationTest
           value = ""
         end
 
-        s += ", " unless s.empty?
-        s += "#{k}#{value}"
+        s << ", " unless s.empty?
+        s << "#{k}#{value}"
       end
     end
   end