diff --git a/targets/ramips-mt7621 b/targets/ramips-mt7621
index 32134879..ad93174b 100644
--- a/targets/ramips-mt7621
+++ b/targets/ramips-mt7621
@@ -12,3 +12,4 @@ sysupgrade '.tar'
 # ZBT
 
 device zbt-wg3526 zbt-wg3526
+factory