diff --git a/.config/tmux/tmux.conf b/.config/tmux/tmux.conf
index a66d460..5ec85ba 100644
--- a/.config/tmux/tmux.conf
+++ b/.config/tmux/tmux.conf
@@ -1,7 +1,7 @@
 set -g default-terminal "tmux-256color"
 set -g mouse on
 set -g mode-keys vi
-set -g extended_keys always
+set -g extended-keys always
 
 set -g prompt-history-limit 999999
 set -g history-file "$XDG_DATA_HOME/tmux/tmux_history"