diff --git a/sql/database.sql b/sql/database.sql
index 6cc30716..e733253b 100644
--- a/sql/database.sql
+++ b/sql/database.sql
@@ -52,7 +52,7 @@ CREATE TABLE `oauth_session_scopes` (
   `scope_id` int(11) unsigned NOT NULL,
   PRIMARY KEY (`id`),
   KEY `session_id` (`session_id`),
-  KEY `scope` (`scope`),
-  CONSTRAINT `oauth_session_scopes_ibfk_3` FOREIGN KEY (`scope`) REFERENCES `scopes` (`scope`) ON DELETE CASCADE ON UPDATE CASCADE,
+  KEY `scope_id` (`scope_id`),
+  CONSTRAINT `oauth_session_scopes_ibfk_5` FOREIGN KEY (`scope_id`) REFERENCES `scopes` (`id`) ON DELETE CASCADE,
   CONSTRAINT `oauth_session_scopes_ibfk_4` FOREIGN KEY (`session_id`) REFERENCES `oauth_sessions` (`id`) ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;