diff --git a/plugins/periodicals.py b/plugins/periodicals.py
index 290310c..d99f743 100644
--- a/plugins/periodicals.py
+++ b/plugins/periodicals.py
@@ -187,7 +187,7 @@ class TestPassive(hooks.Passive):
             # Make our callbacks
             async def on_click(event: slack_util.Event, response: str):
                 # Edit the message to show the result.
-                client.get_slack().edit_message(response, event.conversation.conversation_id, event.message.ts, None)
+                client.get_slack().edit_message(response, event.conversation.conversation_id, event.message.ts, [])
 
             def on_expire():
                 client.get_slack().edit_message("Timed out", "#botzone", msg_ts, [])