diff --git a/src/common/database.c b/src/common/database.c
index 7b5d99988c90..37e5f6d2fc5c 100644
--- a/src/common/database.c
+++ b/src/common/database.c
@@ -3269,7 +3269,7 @@ static void _create_library_schema(dt_database_t *db)
 
   sqlite3_exec(db->handle,
                "CREATE UNIQUE INDEX main.selected_images_ni"
-               " ON selected_images (num, imgid)",
+               " ON selected_images (imgid)",
                NULL, NULL, NULL);
   ////////////////////////////// history
   sqlite3_exec(