diff --git a/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache b/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
index 28932890af..0751d42ce6 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/monkey.mustache
@@ -1,90 +1,82 @@
-# module Swagger
-  class Object 
-  
-    unless Object.method_defined? :blank?
-      def blank?
-        respond_to?(:empty?) ? empty? : !self
-      end
+class Object
+  unless Object.method_defined? :blank?
+    def blank?
+      respond_to?(:empty?) ? empty? : !self
     end
-  
-    unless Object.method_defined? :present?
-      def present?
-        !blank?
-      end
-    end
-
   end
 
-  class String
-
-    unless String.method_defined? :underscore
-      def underscore
-        self.gsub(/::/, '/').
-        gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
-        gsub(/([a-z\d])([A-Z])/,'\1_\2').
-        tr("-", "_").
-        downcase
-      end
-    end
-  
-    unless String.method_defined? :camelize
-      def camelize(first_letter_in_uppercase = true)
-        if first_letter_in_uppercase != :lower
-          self.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
-        else
-          self.to_s[0].chr.downcase + camelize(self)[1..-1]
-        end
-      end
+  unless Object.method_defined? :present?
+    def present?
+      !blank?
     end
+  end
+end
 
+class String
+  unless String.method_defined? :underscore
+    def underscore
+      self.gsub(/::/, '/').
+      gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
+      gsub(/([a-z\d])([A-Z])/,'\1_\2').
+      tr("-", "_").
+      downcase
+    end
   end
 
-  class Hash
-
-    unless Hash.method_defined? :stringify_keys    
-      def stringify_keys
-        inject({}) do |options, (key, value)|
-          options[key.to_s] = value
-          options
-        end
+  unless String.method_defined? :camelize
+    def camelize(first_letter_in_uppercase = true)
+      if first_letter_in_uppercase != :lower
+        self.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
+      else
+        self.to_s[0].chr.downcase + camelize(self)[1..-1]
       end
     end
-    
-    unless Hash.method_defined? :stringify_keys!
-      def stringify_keys!
-        self.replace(self.stringify_keys)
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_keys
-      def symbolize_keys
-        inject({}) do |options, (key, value)|
-          options[(key.to_sym rescue key) || key] = value
-          options
-        end
-      end
-    end
-  
-    unless Hash.method_defined? :symbolize_keys!
-      def symbolize_keys!
-        self.replace(self.symbolize_keys)
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_and_underscore_keys
-      def symbolize_and_underscore_keys
-        inject({}) do |options, (key, value)|
-          options[(key.to_s.underscore.to_sym rescue key) || key] = value
-          options
-        end
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_and_underscore_keys!
-      def symbolize_and_underscore_keys!
-        self.replace(self.symbolize_and_underscore_keys)
-      end
-    end
-  
   end
-# end
\ No newline at end of file
+end
+
+class Hash
+  unless Hash.method_defined? :stringify_keys
+    def stringify_keys
+      inject({}) do |options, (key, value)|
+        options[key.to_s] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :stringify_keys!
+    def stringify_keys!
+      self.replace(self.stringify_keys)
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_keys
+    def symbolize_keys
+      inject({}) do |options, (key, value)|
+        options[(key.to_sym rescue key) || key] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_keys!
+    def symbolize_keys!
+      self.replace(self.symbolize_keys)
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_and_underscore_keys
+    def symbolize_and_underscore_keys
+      inject({}) do |options, (key, value)|
+        options[(key.to_s.underscore.to_sym rescue key) || key] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_and_underscore_keys!
+    def symbolize_and_underscore_keys!
+      self.replace(self.symbolize_and_underscore_keys)
+    end
+  end
+end
diff --git a/samples/client/petstore/ruby/lib/swagger_client/monkey.rb b/samples/client/petstore/ruby/lib/swagger_client/monkey.rb
index 28932890af..0751d42ce6 100644
--- a/samples/client/petstore/ruby/lib/swagger_client/monkey.rb
+++ b/samples/client/petstore/ruby/lib/swagger_client/monkey.rb
@@ -1,90 +1,82 @@
-# module Swagger
-  class Object 
-  
-    unless Object.method_defined? :blank?
-      def blank?
-        respond_to?(:empty?) ? empty? : !self
-      end
+class Object
+  unless Object.method_defined? :blank?
+    def blank?
+      respond_to?(:empty?) ? empty? : !self
     end
-  
-    unless Object.method_defined? :present?
-      def present?
-        !blank?
-      end
-    end
-
   end
 
-  class String
-
-    unless String.method_defined? :underscore
-      def underscore
-        self.gsub(/::/, '/').
-        gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
-        gsub(/([a-z\d])([A-Z])/,'\1_\2').
-        tr("-", "_").
-        downcase
-      end
-    end
-  
-    unless String.method_defined? :camelize
-      def camelize(first_letter_in_uppercase = true)
-        if first_letter_in_uppercase != :lower
-          self.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
-        else
-          self.to_s[0].chr.downcase + camelize(self)[1..-1]
-        end
-      end
+  unless Object.method_defined? :present?
+    def present?
+      !blank?
     end
+  end
+end
 
+class String
+  unless String.method_defined? :underscore
+    def underscore
+      self.gsub(/::/, '/').
+      gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
+      gsub(/([a-z\d])([A-Z])/,'\1_\2').
+      tr("-", "_").
+      downcase
+    end
   end
 
-  class Hash
-
-    unless Hash.method_defined? :stringify_keys    
-      def stringify_keys
-        inject({}) do |options, (key, value)|
-          options[key.to_s] = value
-          options
-        end
+  unless String.method_defined? :camelize
+    def camelize(first_letter_in_uppercase = true)
+      if first_letter_in_uppercase != :lower
+        self.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
+      else
+        self.to_s[0].chr.downcase + camelize(self)[1..-1]
       end
     end
-    
-    unless Hash.method_defined? :stringify_keys!
-      def stringify_keys!
-        self.replace(self.stringify_keys)
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_keys
-      def symbolize_keys
-        inject({}) do |options, (key, value)|
-          options[(key.to_sym rescue key) || key] = value
-          options
-        end
-      end
-    end
-  
-    unless Hash.method_defined? :symbolize_keys!
-      def symbolize_keys!
-        self.replace(self.symbolize_keys)
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_and_underscore_keys
-      def symbolize_and_underscore_keys
-        inject({}) do |options, (key, value)|
-          options[(key.to_s.underscore.to_sym rescue key) || key] = value
-          options
-        end
-      end
-    end
-
-    unless Hash.method_defined? :symbolize_and_underscore_keys!
-      def symbolize_and_underscore_keys!
-        self.replace(self.symbolize_and_underscore_keys)
-      end
-    end
-  
   end
-# end
\ No newline at end of file
+end
+
+class Hash
+  unless Hash.method_defined? :stringify_keys
+    def stringify_keys
+      inject({}) do |options, (key, value)|
+        options[key.to_s] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :stringify_keys!
+    def stringify_keys!
+      self.replace(self.stringify_keys)
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_keys
+    def symbolize_keys
+      inject({}) do |options, (key, value)|
+        options[(key.to_sym rescue key) || key] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_keys!
+    def symbolize_keys!
+      self.replace(self.symbolize_keys)
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_and_underscore_keys
+    def symbolize_and_underscore_keys
+      inject({}) do |options, (key, value)|
+        options[(key.to_s.underscore.to_sym rescue key) || key] = value
+        options
+      end
+    end
+  end
+
+  unless Hash.method_defined? :symbolize_and_underscore_keys!
+    def symbolize_and_underscore_keys!
+      self.replace(self.symbolize_and_underscore_keys)
+    end
+  end
+end