diff --git a/files/.tmux.conf b/files/.tmux.conf
index fcbef2b..192397b 100644
--- a/files/.tmux.conf
+++ b/files/.tmux.conf
@@ -5,6 +5,12 @@ run-shell "\
 		tmux set-environment -g TMUX_VERSION \$((x * 100 + y));\
 	done"
 
+# https://github.com/tmux/tmux/blob/master/CHANGES
+#
+# 2.2
+# * UTF8 autodetected, `set status-utf8` not accepted.
+#
+
 # same prefix as `screen`
 set -g prefix C-a
 unbind C-b
@@ -24,7 +30,7 @@ bind C-a send-prefix
 
 # status bar
 #
-set -g status-utf8 on
+if-shell -b 'test $TMUX_VERSION -lt 202' 'set -g status-utf8 on'
 set -g monitor-activity on
 set -g visual-activity on