diff --git a/protocols/clientbot.py b/protocols/clientbot.py
index 48b65b7..60bcd34 100644
--- a/protocols/clientbot.py
+++ b/protocols/clientbot.py
@@ -14,6 +14,8 @@ class ClientbotWrapperProtocol(Protocol):
     def __init__(self, irc):
         super().__init__(irc)
 
+        self.protocol_caps = {'clear-channels-on-leave'}
+
         self.has_eob = False
 
         # Remove conf key checks for those not needed for Clientbot.