diff --git a/conf/tmux.conf b/conf/tmux.conf
index b4f3963..69bccde 100644
--- a/conf/tmux.conf
+++ b/conf/tmux.conf
@@ -4,14 +4,15 @@
 # mkdir -p $HOME/.config/tmux
 # curl https://git.fnet.cz/lachtan/get/raw/branch/master/conf/tmux.conf -o $HOME/.config/tmux/tmux.conf
 
-# Searched in this oreder
+# Searched in this oreder:
 # /etc/tmux.conf
-# ~/.config/tmux/tmux.conf
 # ~/.tmux.conf
+# ~/.config/tmux/tmux.conf
 
 # Extended keys (required for pi Shift+Enter etc.)
 set -g extended-keys on
-set -g extended-keys-format csi-u
+# requires tmux >= 3.4
+# set -g extended-keys-format csi-u
 
 # Prefix: Ctrl+a (like screen)
 unbind C-b