diff --git a/src/Grant/AbstractAuthorizeGrant.php b/src/Grant/AbstractAuthorizeGrant.php
index 7f05100c..6a8d7c07 100644
--- a/src/Grant/AbstractAuthorizeGrant.php
+++ b/src/Grant/AbstractAuthorizeGrant.php
@@ -13,6 +13,11 @@ namespace League\OAuth2\Server\Grant;
 
 abstract class AbstractAuthorizeGrant extends AbstractGrant
 {
+    /**
+     * @var string
+     */
+    protected $defaultScope = '';
+
     /**
      * @param string $uri
      * @param array  $params
@@ -26,4 +31,12 @@ abstract class AbstractAuthorizeGrant extends AbstractGrant
 
         return $uri . http_build_query($params);
     }
+
+    /**
+     * @param string $scope
+     */
+    public function setDefaultScope($scope)
+    {
+        $this->defaultScope = $scope;
+    }
 }