diff --git a/ddclient.in b/ddclient.in
index 779537b..d8ef014 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -6355,28 +6355,23 @@ sub nic_duckdns_update {
             next;
         }
         next if !header_ok($h, $reply);
-        my @reply = split /\n/, $reply;
-        my $state = 'noresult';
-        my $line = '';
-        for $line (@reply) {
-            if ($line eq 'OK') {
-                $config{$h}{'ipv4'} = $ipv4 if $ipv4;
-                $config{$h}{'ipv6'} = $ipv6 if $ipv6;
-                $config{$h}{'mtime'} = $now;
-                $config{$h}{'status-ipv4'} = 'good' if $ipv4;
-                $config{$h}{'status-ipv6'} = 'good' if $ipv6;
-                $state = 'result';
-                success("updating %s: good: IPv4 address set to %s", $h, $ipv4) if $ipv4;
-                success("updating %s: good: IPv6 address set to %s", $h, $ipv6) if $ipv6;
-            } elsif ($line eq 'KO') {
-                $config{$h}{'status-ipv4'} = 'failed' if $ipv4;
-                $config{$h}{'status-ipv6'} = 'failed' if $ipv6;
-                $state = 'result';
-                failed("updating %s: Server said: '%s'", $h, $line);
-            }
-        }
-        if ($state eq 'noresult') {
-            failed("updating %s: Server said: '%s'", $h, $line);
+        (my $body = $reply) =~ s/^.*?\n\n//s or do {
+            failed("$h: Invalid response from server");
+            next;
+        };
+        chomp($body);
+        if ($body eq 'OK') {
+            $config{$h}{'ipv4'} = $ipv4 if $ipv4;
+            $config{$h}{'ipv6'} = $ipv6 if $ipv6;
+            $config{$h}{'mtime'} = $now;
+            $config{$h}{'status-ipv4'} = 'good' if $ipv4;
+            $config{$h}{'status-ipv6'} = 'good' if $ipv6;
+            success("updating %s: good: IPv4 address set to %s", $h, $ipv4) if $ipv4;
+            success("updating %s: good: IPv6 address set to %s", $h, $ipv6) if $ipv6;
+        } else {
+            $config{$h}{'status-ipv4'} = 'failed' if $ipv4;
+            $config{$h}{'status-ipv6'} = 'failed' if $ipv6;
+            failed("updating %s: Server said: '%s'", $h, $body);
         }
     }
 }