diff --git a/blacklist.sh b/blacklist.sh
index c9f83c9..9a2d560 100755
--- a/blacklist.sh
+++ b/blacklist.sh
@@ -35,7 +35,7 @@ else
     LIMIT="10/minute"
 fi
 
-function link_set {
+link_set () {
     if [ "$3" = "log" ]; then
         iptables -A "$1" -m set --match-set "$2" src,dst -m limit --limit "$LIMIT" -j LOG --log-prefix "BLOCK $2 "
     fi