diff --git a/openvpn-install.sh b/openvpn-install.sh
index adf7a90..2c90b88 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -8,7 +8,7 @@
 # universal as possible.
 
 
-if [[ "$USER" != 'root' ]]; then
+if [[ "$EUID" -ne 0 ]]; then
 	echo "Sorry, you need to run this as root"
 	exit
 fi