Index: trunk/ippTools/src/difftool.c
===================================================================
--- trunk/ippTools/src/difftool.c	(revision 18975)
+++ trunk/ippTools/src/difftool.c	(revision 18976)
@@ -522,5 +522,6 @@
     PXOPT_COPY_STR(config->args, where, "-skycell_id", "diffSkyfile.skycell_id", "==");
     PXOPT_COPY_STR(config->args, where, "-tess_id", "diffSkyfile.tess_id", "==");
-    PXOPT_COPY_STR(config->args, where, "-exp_id", "rawExp.exp_id", "==");
+    PXOPT_COPY_S64(config->args, where, "-exp_id", "rawExp.exp_id", "==");
+    PXOPT_COPY_STR(config->args, where, "-exp_name", "rawExp.exp_name", "==");
 
     PXOPT_LOOKUP_U64(limit, config->args, "-limit", false, false);