diff --git a/tests/_external/slack_utils.py b/tests/_external/slack_utils.py
index cb83ad999..abc6c9648 100644
--- a/tests/_external/slack_utils.py
+++ b/tests/_external/slack_utils.py
@@ -40,7 +40,7 @@ def post_slack_message(channel, text):
     return response
 
 
-def post_message_in_thread(channel, text, thread_ts):
+def post_slack_message_in_thread(channel, text, thread_ts):
     """Post a message as a threaded reply in a Slack channel.
 
     Args: