diff --git a/firewall.conf b/firewall.conf
index 8f08a85..2325402 100644
--- a/firewall.conf
+++ b/firewall.conf
@@ -26,12 +26,12 @@ OPEN_PORTS=("0.0.0.0/0 tcp ssh")
 ## Port forwarding
 # "source port destination:port protocol" "source port destination:port protocol" ...
 # example : TRAFFICS=("0.0.0.0/0 80 192.168.0.42:80 tcp" "42.42.42.42 4242 192.168.0.43:22 tcp")
-TRAFFICS=("")
+TRAFFICS=()
 
 ## Port redirection
 # "interface protocol sourceport destport" ...
 # example : REDIRECTIONS=("eth42 tcp 32 25" "$LAN_INT tcp 25 4242")
-REDIRECTIONS=("")
+REDIRECTIONS=()
 
 # Hook point to write your own iptables rules
 ipt_hook()