diff --git a/inxi b/inxi
index c3a1dba..5a6da78 100755
--- a/inxi
+++ b/inxi
@@ -491,7 +491,7 @@ if [[ -n $( type -p tput ) ]];then
 	COLUMNS=$(tput cols)
 fi
 # double check, just in case it's missing functionality or whatever
-if [[ -z $( grep -E '^[0-9]+$' <<<  $COLUMNS ) ]];then
+if [[ -z ${COLUMNS##[0-9]*} ]];then
 	LINES=100
 	COLUMNS=80
 fi