diff --git a/install b/install
index 3de142d4..b026c78e 100755
--- a/install
+++ b/install
@@ -2,6 +2,17 @@
 
 echo -e "\ninstallation script for CubeSatSim v2.2\n"
 
+cat  | grep "11."
+
+ if [[ $(grep '11.' /etc/debian_version) ]]; then
+    echo "Installing on Debian 11 (Bullseye)"
+  else
+    echo "This is not Debian 11 (Bullseye)!"
+	echo "Installation is not likely to work."
+	echo "Recommend you start with a Bullseye."
+	sleep 10
+  fi
+
 FILE=/home/pi/CubeSatSim/sim.cfg
 if [ -f "$FILE" ]; then
     echo "$FILE exists."