diff --git a/packer/ubuntu1604-juju.json b/packer/ubuntu1604-juju.json
index f4930fc..5141745 100644
--- a/packer/ubuntu1604-juju.json
+++ b/packer/ubuntu1604-juju.json
@@ -2,7 +2,6 @@
   "provisioners": [
     {
       "type": "shell",
-      "execute_command": "echo 'vagrant' | {{.Vars}} sudo -S -E bash '{{.Path}}'",
       "script": "scripts/install_packages.sh"
     },
     {