diff --git a/piker/ui/cli.py b/piker/ui/cli.py
index 6716607a..cc571eb6 100644
--- a/piker/ui/cli.py
+++ b/piker/ui/cli.py
@@ -174,7 +174,7 @@ def chart(
 
 
     _main(
-        syms=symbols,
+        sym=symbols[0],
         brokernames=brokernames,
         piker_loglevel=pikerloglevel,
         tractor_kwargs={