diff --git a/mcastmngr/files/broadcom/lib/mcast/broadcom.sh b/mcastmngr/files/broadcom/lib/mcast/broadcom.sh
index 902f3c79f..7978efd8a 100755
--- a/mcastmngr/files/broadcom/lib/mcast/broadcom.sh
+++ b/mcastmngr/files/broadcom/lib/mcast/broadcom.sh
@@ -49,7 +49,7 @@ config_snooping_upstream_interface() {
 			*.*)
 				port="$(echo "$dev" | cut -d'.' -f 1)"
 				if [ $port == $ethwan ]; then
-					ifconfig $dev | grep RUNNING >/dev/null && $snooping_upstream_intf="$dev" && break
+					ifconfig $dev | grep RUNNING >/dev/null && snooping_upstream_intf="$dev" && break
 				fi
 				;;
 		esac