Index: trunk/ippTools/src/disttool.c
===================================================================
--- trunk/ippTools/src/disttool.c	(revision 32975)
+++ trunk/ippTools/src/disttool.c	(revision 33042)
@@ -660,5 +660,5 @@
 
     // require data_group or dist_id to be supplied
-    PXOPT_LOOKUP_STR(data_group, config->args, "-data_group", true, false);
+    PXOPT_LOOKUP_STR(data_group, config->args, "-data_group", false, false);
     PXOPT_LOOKUP_S64(dist_id, config->args, "-dist_id", false, false);
     if (!data_group && !dist_id) {