diff --git a/openvpn-install.sh b/openvpn-install.sh
index 17f63c7..bf3171c 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -77,7 +77,7 @@ function checkOS() {
 		if [[ $ID == "amzn" ]]; then
 			if [[ $VERSION_ID == "2" ]]; then
 				OS="amzn"
-			elif [[ "$(echo $PRETTY_NAME | cut -c 1-18)" == "Amazon Linux 2023." ]] && [[ "$(echo $PRETTY_NAME | cut -c 19)" -ge 6 ]]; then
+			elif [[ "$(echo "$PRETTY_NAME" | cut -c 1-18)" == "Amazon Linux 2023." ]] && [[ "$(echo "$PRETTY_NAME" | cut -c 19)" -ge 6 ]]; then
 				OS="amzn2023"
 			else
 				echo "⚠️ Your version of Amazon Linux is not supported."