diff --git a/net/mwan3/files/etc/init.d/mwan3 b/net/mwan3/files/etc/init.d/mwan3
index 33a1f46e53..8512af7d9e 100755
--- a/net/mwan3/files/etc/init.d/mwan3
+++ b/net/mwan3/files/etc/init.d/mwan3
@@ -77,7 +77,7 @@ stop_service() {
 			$IP route flush table $tid &> /dev/null
 		done
 
-		for rule in $($IP rule list | grep -E '^[1-3][0-9]{3}\:' | cut -d ':' -f 1); do
+		for rule in $($IP rule list | grep -E '^[1-3][0-9]{3}:' | cut -d ':' -f 1); do
 			$IP rule del pref $rule &> /dev/null
 		done
 		table="$($IPT -S)"