diff --git a/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh b/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
index 804870d7d44..abbabd6625c 100755
--- a/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
+++ b/package/network/utils/umbim/files/lib/netifd/proto/mbim.sh
@@ -155,7 +155,7 @@ proto_mbim_setup() {
 		sleep 15
 	}
 
-	return $rt
+	return $ret
 }
 
 proto_mbim_teardown() {