diff --git a/.tmux.conf b/.tmux.conf
index 1e20460..a23bdad 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -178,7 +178,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #
 # unset GREP_OPTIONS
 # export LC_NUMERIC=C
-# set +H 2>/dev/null || true
+# (set +H 2>/dev/null) && set +H || true
 #
 # if ! printf '' | sed -E 's///' 2>/dev/null; then
 #   if printf '' | sed -r 's///' 2>/dev/null; then