Index: trunk/ippTools/src/dettoolConfig.c
===================================================================
--- trunk/ippTools/src/dettoolConfig.c	(revision 8421)
+++ trunk/ippTools/src/dettoolConfig.c	(revision 8431)
@@ -317,5 +317,5 @@
         "define jpeg 2 (required)", NULL);
     psMetadataAddF32(addresidexpArgs, PS_LIST_TAIL, "-stats",  0,
-        "define stats (required)", NULL);
+        "define stats (required)", NAN);
     psMetadataAddBool(addresidexpArgs, PS_LIST_TAIL, "-reject",  0,
         "exposure is not to be stacked in the next iteration", false);