diff --git a/src/callbacks.py b/src/callbacks.py
index 3d744f451..2a1cc4c02 100644
--- a/src/callbacks.py
+++ b/src/callbacks.py
@@ -342,6 +342,7 @@ class IrcObjectProxy:
                         #debug.printf('Being prevented with chancap')
                         debug.msg('Preventing %s from calling %s' % \
                                   (self.msg.nick, name), 'normal')
+                        self.error(self.msg, conf.replyNoCapability %^name)
                         return
                 command = getattr(cb, name)
                 if cb.threaded: