diff --git a/plugins/GNUsocialPhotos/GNUsocialPhotosPlugin.php b/plugins/GNUsocialPhotos/GNUsocialPhotosPlugin.php
index 4843119557..5b77475c83 100644
--- a/plugins/GNUsocialPhotos/GNUsocialPhotosPlugin.php
+++ b/plugins/GNUsocialPhotos/GNUsocialPhotosPlugin.php
@@ -67,7 +67,7 @@ class GNUsocialPhotosPlugin extends Plugin
     {
         $schema = Schema::get();
         $schema->ensureTable('GNUsocialPhoto',
-                                array(new ColumnDef('notice_id', 'int(11)', null, false),
+                                array(new ColumnDef('notice_id', 'int(11)', null, false, 'PRI'),
                                       new ColumnDef('album_id', 'int(11)', null, false),
                                       new ColumnDef('uri', 'varchar(512)', null, false),
                                       new ColumnDef('thumb_uri', 'varchar(512)', null, false),