diff --git a/src/inc/routes/apiv2/tags.mjs b/src/inc/routes/apiv2/tags.mjs
index f863b79..2b04680 100644
--- a/src/inc/routes/apiv2/tags.mjs
+++ b/src/inc/routes/apiv2/tags.mjs
@@ -105,11 +105,8 @@ export default router => {
       else {
         // update
         await db`
-          update "tags_assign" set ${
-            db({
-              tag_id: db`(array[2,1])[tag_id]`
-            }, tag_id)
-          }
+          update "tags_assign"
+          set tag_id = ${db`(array[2,1])[tag_id]`}
           where tag_id = any(array[1,2])
           and item_id = ${+postid}
         `;