diff --git a/src/Auth/OAuth.php b/src/Auth/OAuth.php
index f60aea9dd9..2da7917b91 100644
--- a/src/Auth/OAuth.php
+++ b/src/Auth/OAuth.php
@@ -92,11 +92,12 @@ abstract class OAuth
      * 
      * @return array
      */
-    protected function addScope(string $scope){
+    protected function addScope(string $scope):OAuth{
         // Add a scope to the scopes array if it isn't already present 
         if (!in_array($scope, $this->scopes)){
             $this->scopes[] = $scope; 
         }
+        return $this;
     }
 
      /**