diff --git a/journalctl.md b/journalctl.md
index 8e60b75a7..89a26c227 100644
--- a/journalctl.md
+++ b/journalctl.md
@@ -1,2 +1,3 @@
 - The invocation for user services is e.g.:
   - `journalctl --user-unit agora-server`
+  - Why it's --user-unit instead of --user (like systemctl) I'm going to assume nobody knows (I sure don't).