diff --git a/pages/common/ps.md b/pages/common/ps.md
index a31d04facc..f6c5e4f7c6 100644
--- a/pages/common/ps.md
+++ b/pages/common/ps.md
@@ -16,8 +16,8 @@
 
 - List all processes of the current user in extra full format:
 
-`ps --user $(id --user) -F`
+`ps --user $(id -u) -F`
 
 - List all processes of the current user as a tree:
 
-`ps --user $(id --user) f`
+`ps --user $(id -u) f`