diff --git a/modules/swagger-codegen/src/main/resources/ruby/base_object.mustache b/modules/swagger-codegen/src/main/resources/ruby/base_object.mustache
index 733537cb14e..ccf6db4a4fd 100644
--- a/modules/swagger-codegen/src/main/resources/ruby/base_object.mustache
+++ b/modules/swagger-codegen/src/main/resources/ruby/base_object.mustache
@@ -66,7 +66,7 @@ module {{moduleName}}
         if value.is_a?(Array)
           hash[param] = value.compact.map{ |v| _to_hash(v) }
         else
-          hash[param] = value
+          hash[param] = _to_hash(value)
         end
       end
       hash
diff --git a/samples/client/petstore/ruby/lib/petstore/models/base_object.rb b/samples/client/petstore/ruby/lib/petstore/models/base_object.rb
index d5cc842164a..4a9a781ae64 100644
--- a/samples/client/petstore/ruby/lib/petstore/models/base_object.rb
+++ b/samples/client/petstore/ruby/lib/petstore/models/base_object.rb
@@ -66,7 +66,7 @@ module Petstore
         if value.is_a?(Array)
           hash[param] = value.compact.map{ |v| _to_hash(v) }
         else
-          hash[param] = value
+          hash[param] = _to_hash(value)
         end
       end
       hash