diff --git a/git_cl.py b/git_cl.py
index 29ee421ac..f884eaa6c 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -1598,6 +1598,10 @@ def CMDtry(parser, args):
   cl.RpcServer().trigger_try_jobs(
       cl.GetIssue(), patchset, options.name, options.clobber, options.revision,
       builders_and_tests)
+  print('Tried jobs on:')
+  length = max(len(builder) for builder in builders_and_tests)
+  for builder in sorted(builders_and_tests):
+    print '  %*s: %s' % (length, builder, ','.join(builders_and_tests[builder]))
   return 0
 
 
diff --git a/rietveld.py b/rietveld.py
index 94f7c6f52..e0bd7a54a 100644
--- a/rietveld.py
+++ b/rietveld.py
@@ -315,10 +315,11 @@ class Rietveld(object):
     params = [
       ('reason', reason),
       ('clobber', 'True' if clobber else 'False'),
-      ('revision', revision if revision else 'HEAD'),
       ('builders', json.dumps(builders_and_tests)),
       ('xsrf_token', self.xsrf_token()),
     ]
+    if revision:
+      params.append(('revision', revision))
     return self.post('/%d/try/%d' % (issue, patchset), params)
 
   def get_pending_try_jobs(self, cursor=None, limit=100):