diff --git a/dnsapi/dns_world4you.sh b/dnsapi/dns_world4you.sh
index 8e12dd5f..e1585801 100644
--- a/dnsapi/dns_world4you.sh
+++ b/dnsapi/dns_world4you.sh
@@ -171,7 +171,7 @@ _get_paketnr() {
   domains=$(echo "$form" | _ggrep -E '^\s*([A-Za-z0-9_-]+\.)+[A-Za-z0-9_-]*$' | sed 's/^\s*\(\S*\)$/\1/')
   domain=''
   for domain in $domains; do
-    if [ $(echo "$domain" | grep "$tld\$") ]; then
+    if [ "$(echo "$domain" | grep -q "$tld\$")" ]; then
       break
     fi
   done