diff --git a/pages/linux/ac.md b/pages/linux/ac.md
index 757ef2596d..728f1e14cf 100644
--- a/pages/linux/ac.md
+++ b/pages/linux/ac.md
@@ -17,3 +17,7 @@
 - Print how long a particular user has been connected in hours per day (with total):
 
 `ac --daily-totals --individual-totals {{username}}`
+
+- Also display additional details:
+
+`ac --compatibility`