diff --git a/images/linux/ubuntu2004.json b/images/linux/ubuntu2004.json
index 48d309b1e..131bd1f04 100644
--- a/images/linux/ubuntu2004.json
+++ b/images/linux/ubuntu2004.json
@@ -95,6 +95,7 @@
         },
         {
             "type": "shell",
+            "execute_command": "chmod +x {{ .Path }}; sudo {{ .Vars }} {{ .Path }}",
             "scripts":[
                 "{{template_dir}}/scripts/installers/preparemetadata.sh"
             ],
@@ -103,8 +104,7 @@
                 "METADATA_FILE={{user `metadata_file`}}",
                 "HELPER_SCRIPTS={{user `helper_script_folder`}}",
                 "ANNOUNCEMENTS={{user `announcements`}}"
-            ],
-            "execute_command": "sudo sh -c '{{ .Vars }} {{ .Path }}'"
+            ]
         },
         {
             "type": "shell",