Index: /tags/ipp-20141024/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm
===================================================================
--- /tags/ipp-20141024/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 38200)
+++ /tags/ipp-20141024/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 38201)
@@ -237,5 +237,5 @@
     if (!iszero($mjd_max)) {
         $dateobs_end = mjd_to_dateobs($mjd_max);
-        if (!$dateobs_begin) {
+        if (!$dateobs_end) {
             $row->{error_code} = $PSTAMP_INVALID_REQUEST;
             print STDERR "Invalid MJD_MAX: $mjd_max\n";