Index: trunk/ippTools/src/difftool.c
===================================================================
--- trunk/ippTools/src/difftool.c	(revision 17713)
+++ trunk/ippTools/src/difftool.c	(revision 17723)
@@ -437,5 +437,5 @@
     PXOPT_LOOKUP_S16(code, config->args, "-code", false, false);
 
-    PXOPT_LOOKUP_STR(uri, config->args, "-uri", true, false);
+    PXOPT_LOOKUP_STR(uri, config->args, "-uri", false, false);
     if (code == 0 && !uri) {
         psError(PS_ERR_UNKNOWN, true, "-uri is required");
@@ -443,5 +443,5 @@
     }
 
-    PXOPT_LOOKUP_STR(path_base, config->args, "-path_base", true, false);
+    PXOPT_LOOKUP_STR(path_base, config->args, "-path_base", false, false);
     if (code == 0 && !path_base) {
         psError(PS_ERR_UNKNOWN, true, "-path_base is required");