diff --git a/teuthology/task/workunit.py b/teuthology/task/workunit.py
index 4221b70630e..812e7214c34 100644
--- a/teuthology/task/workunit.py
+++ b/teuthology/task/workunit.py
@@ -69,7 +69,7 @@ def task(ctx, config):
                 all_spec = True
 
     if all_spec:
-        all_tasks = config["all"]
+        all_tasks = clients["all"]
         _spawn_on_all_clients(ctx, all_tasks, config.get('env'))
 
 def _make_scratch_dir(ctx, role):