diff --git a/phpBB/styles/all/template/cron.html b/phpBB/styles/all/template/cron.html
index 89ceaaba78..5e4c901263 100644
--- a/phpBB/styles/all/template/cron.html
+++ b/phpBB/styles/all/template/cron.html
@@ -4,4 +4,4 @@
 	to hide visually and `aria-hidden="true"` to hide from screen-readers; using
 	`hidden` or `display: none` would prevent the task from running.
 #}
-<img class="sr-only" aria-hidden="true" src="{{ CRON_TASK_URL|e('url') }}" width="1" height="1" alt="">
+<img class="sr-only" aria-hidden="true" src="{{ CRON_TASK_URL|e('html_attr') }}" width="1" height="1" alt="">