diff --git a/Scripts/gadget.sh b/Scripts/gadget.sh
index fde27f2..490c1ef 100755
--- a/Scripts/gadget.sh
+++ b/Scripts/gadget.sh
@@ -3,6 +3,13 @@
 # "Using OTG mode on Raspberry Pi SBCs"
 # https://pip-assets.raspberrypi.com/categories/685-app-notes-guides-whitepapers/documents/RP-009276-WP/Using-OTG-mode-on-Raspberry-Pi-SBCs
 
+# This script only works if you are running it as root
+if [ $(id -u) -ne 0 ]; then
+    echo "Please run as root or use sudo"
+    exit 1
+fi
+
+
 # Is the dwc2 overlay installed?  Nothing will work if it isn't.
 if lsmod | grep -q "dwc2"; then
     systemd-cat -t gadget.sh -p info echo "DWC2 module loaded, setting up OTG gadget serial and ethernet"