diff --git a/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb b/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb
index 9a7ea1f657..36589d65e2 100644
--- a/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb
+++ b/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb
@@ -10,7 +10,7 @@ module Rails
       class_option :stylesheet_engine, desc: "Engine for Stylesheets"
 
       def handle_skip
-        @options = @options.merge(stylesheet_engine: false) if !options[:stylesheets]
+        @options = @options.merge(stylesheet_engine: false) unless options[:stylesheets]
       end
 
       hook_for :scaffold_controller, required: true
diff --git a/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb b/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb
index 6f7eb07229..e813437d75 100644
--- a/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb
+++ b/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb
@@ -31,7 +31,7 @@ class <%= controller_class_name %>Controller < ApplicationController
     if @<%= orm_instance.save %>
       redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully created.'" %>
     else
-      render action: "new"
+      render action: 'new'
     end
   end
 
@@ -40,7 +40,7 @@ class <%= controller_class_name %>Controller < ApplicationController
     if @<%= orm_instance.update("#{singular_table_name}_params") %>
       redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully updated.'" %>
     else
-      render action: "edit"
+      render action: 'edit'
     end
   end
 
diff --git a/railties/test/generators/scaffold_controller_generator_test.rb b/railties/test/generators/scaffold_controller_generator_test.rb
index bd99e78644..c34ce285e3 100644
--- a/railties/test/generators/scaffold_controller_generator_test.rb
+++ b/railties/test/generators/scaffold_controller_generator_test.rb
@@ -162,7 +162,7 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
   def test_new_hash_style
     run_generator
     assert_file "app/controllers/users_controller.rb" do |content|
-      assert_match(/render action: "new"/, content)
+      assert_match(/render action: 'new'/, content)
     end
   end
 end