diff --git a/scripts/_common.sh b/scripts/_common.sh
index b81b4c2..9467def 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -79,7 +79,7 @@ process_ips(){
     # for each IP
     for ip in $ips; do
         # check if the so-called IP really is one
-        if [[ $(ynh_validate_ip4 --ip_address="$ip") == 0 || $(ynh_validate_ip6 --ip_address="$ip") == 0 ]]; then
+        if ynh_validate_ip4 --ip_address="$ip" || ynh_validate_ip6 --ip_address="$ip"; then
             # don't process if the IP is public and the port 53 closed
             echo "IP validated: $ip"
             if [ "$(is_public_ip "$ip")" == 0 ] && [ "$open_port_53" == "false" ]; then