diff --git a/snap/local/build_and_install.sh b/snap/local/build_and_install.sh
index e21ecce89..4c9754d3e 100755
--- a/snap/local/build_and_install.sh
+++ b/snap/local/build_and_install.sh
@@ -1,6 +1,11 @@
 #!/bin/bash
 set -ex
 
+if [[ -z "$TRAVIS" ]]; then
+    echo "This script makes global changes to the system it is run on so should only be run in CI."
+    exit 1
+fi
+
 sudo /snap/bin/lxd.migrate -yes
 sudo /snap/bin/lxd waitready
 sudo /snap/bin/lxd init --auto