diff --git a/swh/scheduler/cli.py b/swh/scheduler/cli.py
--- a/swh/scheduler/cli.py
+++ b/swh/scheduler/cli.py
@@ -596,7 +596,8 @@
 '''
     else:
         tmpl = '{type}:\n  {description}'
-    for tasktype in ctx.obj['scheduler'].get_task_types():
+    for tasktype in sorted(ctx.obj['scheduler'].get_task_types(),
+                           key=lambda x: x['type']):
         if task_type and tasktype['type'] not in task_type:
             continue
         if task_name and tasktype['backend_name'] not in task_name: