diff --git a/daemon.go b/daemon.go
index 6b44039..7af810c 100644
--- a/daemon.go
+++ b/daemon.go
@@ -180,6 +180,9 @@ func (daemon *Daemon) ClientRegister(client *Client, command string, cols []stri
 			return
 		}
 		nickname := cols[1]
+		if (strings.HasPrefix(nickname, ":")) {
+			nickname = strings.TrimPrefix(nickname, ":")
+		}
 		for existingClient := range daemon.clients {
 			if existingClient.nickname == nickname {
 				client.ReplyParts("433", "*", nickname, "Nickname is already in use")