diff --git a/src/main/resources/asyncscala/api.mustache b/src/main/resources/asyncscala/api.mustache
index d6f296b9a74..44beb25ce11 100644
--- a/src/main/resources/asyncscala/api.mustache
+++ b/src/main/resources/asyncscala/api.mustache
@@ -14,7 +14,7 @@ class {{classname}}(client: TransportClient, config: SwaggerConfig) extends ApiC
 
   def {{nickname}}({{#allParams}}
       {{#optional}}
-        {{paramName}}: Option[{{dataType}}] = {{#defaultValue}}{{{defaultValue}}}{{/defaultValue}}{{^defaultValue}}None{{/defaultValue}}{{#hasMore}}, {{/hasMore}}
+        {{paramName}}: Option[{{dataType}}] = {{#defaultValue}}Some({{{defaultValue}}}){{/defaultValue}}{{^defaultValue}}None{{/defaultValue}}{{#hasMore}}, {{/hasMore}}
       {{/optional}}
       {{^optional}}
         {{paramName}}: {{dataType}}{{#defaultValue}} = {{{defaultValue}}}{{/defaultValue}}{{#hasMore}}, {{/hasMore}}
@@ -47,8 +47,8 @@ class {{classname}}(client: TransportClient, config: SwaggerConfig) extends ApiC
       process({{^returnType}}(){{/returnType}}{{#returnType}}ser.deserialize[{{returnType}}](resp.body) {{/returnType}})
     }
   }
-  
+
   {{/operation}}
 
 }
-{{/operations}}
\ No newline at end of file
+{{/operations}}