diff --git a/roles/httpd/defaults/main.yml b/roles/httpd/defaults/main.yml
index 7cb58c931..c11b7ec1f 100644
--- a/roles/httpd/defaults/main.yml
+++ b/roles/httpd/defaults/main.yml
@@ -1,3 +1,6 @@
+# Make this False to disable http://box/common/services/power_off.php button:
+apache_allow_sudo: True
+
 # For schools that use WordPress and/or Moodle intensively. See iiab/iiab #1147
 # WARNING: Enabling this (might) cause excess use of RAM or other resources?
 apache_raise_php_limits: False