diff --git a/ddclient.in b/ddclient.in
index 93a3b43..90cc866 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -2594,7 +2594,7 @@ sub header_ok {
     if ($line =~ m%^s*HTTP/1.*\s+(\d+)%i) {
         my $result = $1;
 
-        if ($result eq '200') {
+        if ($result =~ m/^2\d\d$/) {
             $ok = 1;
 
         } elsif ($result eq '401') {