diff --git a/tools/Python/mctest/mcviewtest.py b/tools/Python/mctest/mcviewtest.py
index 455d56c9da..bfa53d3aa1 100644
--- a/tools/Python/mctest/mcviewtest.py
+++ b/tools/Python/mctest/mcviewtest.py
@@ -363,8 +363,10 @@ def iterate_obj_to_populate_rows(iterobj, otherobjs, rows, ncols, use_iterobj_re
         for key in list(iterobj.keys()): 
             row = []
             rows.append(row)
-            # instr
-            row.append(key)
+            # instr, with the lead column's output type
+            d = join(testdir, get_data_url(iterobj[key]))
+            fmt = " (McCode/NeXus)" if os.path.isfile(join(d, "mccode.h5")) else " (McCode/ASCII)" if has_output(d) else ""
+            row.append(key + fmt)
 
             # prepare row list to have the requested amount of cells (cols)
             for i in range(ncols - len(otherobjs) - 1):