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-rw-r--r--src/IRCChannel.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/IRCChannel.py b/src/IRCChannel.py
index 02a20d5c..24a45a18 100644
--- a/src/IRCChannel.py
+++ b/src/IRCChannel.py
@@ -77,7 +77,7 @@ class Channel(IRCObject.Object):
del self.user_modes[user]
else:
self.modes[mode].discard(arg.lower())
- if not len(self.modes[mode]):
+ if mode in self.modes and not len(self.modes[mode]):
del self.modes[mode]
def change_mode(self, remove: bool, mode: str, arg: str=None):
if remove: