diff --git a/targets/ramips-mt7621 b/targets/ramips-mt7621
index 3213487940fbcd9c8de36bd0976fab302414b959..ad93174b81fb3a598b6c121e36015921d1e6f499 100644
--- a/targets/ramips-mt7621
+++ b/targets/ramips-mt7621
@@ -12,3 +12,4 @@ sysupgrade '.tar'
 # ZBT
 
 device zbt-wg3526 zbt-wg3526
+factory