diff --git a/bash/ps-twtty-7.sh b/bash/ps-twtty-7.sh
index 597adeb..e725bb0 100755
--- a/bash/ps-twtty-7.sh
+++ b/bash/ps-twtty-7.sh
@@ -78,6 +78,7 @@ function prompt_command() {
 	local prompt="--($my_D, Err $E, $my_TTY)---($PWD)--"
 
 	local fillsize=0
+	#if [ -z "${COLUMNS}" ]; then COLUMNS=$(tput cols); fi
 	let fillsize=${COLUMNS}-${#prompt}
 	my_FILL=""
 	if [ $fillsize -gt 0 ]; then