Index: tests/test_which.py
--- tests/test_which.py.orig
+++ tests/test_which.py
@@ -187,7 +187,7 @@ class TestCaseWhich(PexpectTestCase.PexpectTestCase):
         " which() returns executables by other, group, and user ownership. "
         # create an executable and test that it is found using which() for
         # each of the 'other', 'group', and 'user' permission bits.
-        fname = 'g77'
+        fname = 'gzip'
         bin_dir = tempfile.mkdtemp()
         bin_path = os.path.join(bin_dir, fname)
         save_path = os.environ['PATH']