diff --git a/src/sbin/opnsense-installer b/src/sbin/opnsense-installer
index 5d4a62dd9..739c3b9cb 100755
--- a/src/sbin/opnsense-installer
+++ b/src/sbin/opnsense-installer
@@ -37,7 +37,7 @@ ifconfig lo0 ::1
 ifconfig lo0 up
 
 if [ -z "${TERM}" ]; then
-	if [ -e /dev/ttyv0 ]; then
+	if [ -n "$(tty | grep ttyv)" ]; then
 		export TERM=xterm
 	else
 		export TERM=vt100