diff --git a/domainjoin.sh b/domainjoin.sh
index 2f018c9..b1578d1 100644
--- a/domainjoin.sh
+++ b/domainjoin.sh
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+if [[ "$EUID" -ne 0 ]]; then
+  echo "Please run as root"
+  exit
+fi
+
 if [[ -f /etc/debian_version ]]; then
     wget -O - http://repo.pbis.beyondtrust.com/apt/RPM-GPG-KEY-pbis|sudo apt-key add - 
     wget -O /etc/apt/sources.list.d/pbiso.list http://repo.pbis.beyondtrust.com/apt/pbiso.list