diff --git a/deck/chat.py b/deck/chat.py
index a0b62c7..2e9f715 100644
--- a/deck/chat.py
+++ b/deck/chat.py
@@ -35,7 +35,7 @@ class DeckChat:
 
   def _detect_command(self, msg):
     """
-    Split a chat line into the command (or None if none detected)
+    Split a chat line into the command (or 'default' if none detected)
     and the rest of the message.
     """
     res = ('default', msg)