diff --git a/ddclient.in b/ddclient.in
index 5a7f9bf..655b0fa 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -6523,8 +6523,7 @@ sub nic_dondominio_update {
     for my $h (@_) {
         my $ip = delete $config{$h}{'wantip'};
         info("$h: setting IP address to $ip");
-        my $url = "https://$config{$h}{'server'}/plain/?user=$config{$h}{'login'}&password=$config{$h}{'password'}&host=$h&ip=";
-        $url .= $ip if $ip;
+        my $url = "https://$config{$h}{'server'}/plain/?user=$config{$h}{'login'}&password=$config{$h}{'password'}&host=$h&ip=$ip";
         my $reply = geturl(proxy => opt('proxy'), url => $url);
         if (!defined($reply) || !$reply) {
             failed("$h: Request to $config{$h}{'server'} failed");