diff --git a/lib/providers/_utils.js b/lib/providers/_utils.js
index 637dd95db..3426da059 100644
--- a/lib/providers/_utils.js
+++ b/lib/providers/_utils.js
@@ -23,7 +23,7 @@ function addAuthorize (strategy) {
   strategy.response_type = 'code'
 
   // Form data parser
-  const formMiddleware = bodyParser.urlencoded()
+  const formMiddleware = bodyParser.urlencoded({ extended: true })
 
   // Register endpoint
   this.options.serverMiddleware.unshift({