-printf "OK: %s - EUR %.2f (%.2fh)\n", $config->{customer}, $row->{open}, $row->{hours};
+if (defined $row->{open} && defined $row->{hours}) {
+ printf "OK: %s - EUR %.2f (%.2fh)\n", $config->{customer}, $row->{open}, $row->{hours};
+} else {
+ printf "OK: %s - Nyms\n", $config->{customer};
+}