diff --git a/deploy-tools.sh b/deploy-tools.sh
index ea16f18..e87623b 100755
--- a/deploy-tools.sh
+++ b/deploy-tools.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if (( $EUID != 0 )); then
+if [ "$(id -u)" -eq 0 ]; then
     echo "Please run as root"
     exit
 fi