p = script_get_preference("Host Timeout (ms) :");
 if (p =~ '^[0-9]+$')
 {
   argv[i++] = "--host_timeout";
   argv[i++] = p;
   custom_policy ++;
+ } else {
+   argv[i++] = "--host_timeout";
+   argv[i++] = 30m;
+ }