Send an error when a user tries to give a status rank to a non-member.

Closes #2097.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/mode.cpp b/src/mode.cpp
index 294059dfc..c12edede5 100644
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -212,7 +212,10 @@ ModeAction PrefixMode::OnModeChange(User* source, User*, Channel* chan, std::str
 
 	Membership* memb = chan->GetUser(target);
 	if (!memb)
+	{
+		source->WriteNumeric(ERR_USERNOTINCHANNEL, target->nick, chan->name, "They are not on that channel");
 		return MODEACTION_DENY;
+	}
 
 	parameter = target->nick;
 	return (memb->SetPrefix(this, adding) ? MODEACTION_ALLOW : MODEACTION_DENY);