diff --git a/setup.sh b/setup.sh
index 10c2667..d0288bb 100644
--- a/setup.sh
+++ b/setup.sh
@@ -42,6 +42,8 @@ error ()
 
 ###
 
+test "$(whoami)" != "root" || message error "I cannot run as root" ; error
+
 if [ -z "$arguments" ]
 then
   package_categories="${!packages[@]}"