diff --git a/tempest/cmd/subunit_describe_calls.py b/tempest/cmd/subunit_describe_calls.py
index 0f868a9..8ee3055 100644
--- a/tempest/cmd/subunit_describe_calls.py
+++ b/tempest/cmd/subunit_describe_calls.py
@@ -294,7 +294,8 @@
             outfile.write(json.dumps(url_parser.test_logs))
         return
 
-    for test_name, items in url_parser.test_logs.iteritems():
+    for test_name in url_parser.test_logs:
+        items = url_parser.test_logs[test_name]
         sys.stdout.write('{0}\n'.format(test_name))
         if not items:
             sys.stdout.write('\n')
diff --git a/tempest/tests/cmd/test_subunit_describe_calls.py b/tempest/tests/cmd/test_subunit_describe_calls.py
index 1c24c37..5f3d770 100644
--- a/tempest/tests/cmd/test_subunit_describe_calls.py
+++ b/tempest/tests/cmd/test_subunit_describe_calls.py
@@ -33,6 +33,16 @@
         p.communicate()
         self.assertEqual(0, p.returncode)
 
+    def test_return_code_no_output(self):
+        subunit_file = os.path.join(
+            os.path.dirname(os.path.abspath(__file__)),
+            'sample_streams/calls.subunit')
+        p = subprocess.Popen([
+            'subunit-describe-calls', '-s', subunit_file],
+            stdin=subprocess.PIPE)
+        p.communicate()
+        self.assertEqual(0, p.returncode)
+
     def test_parse(self):
         subunit_file = os.path.join(
             os.path.dirname(os.path.abspath(__file__)),