diff --git a/config/jail.conf b/config/jail.conf
index 17972353..690466fc 100644
--- a/config/jail.conf
+++ b/config/jail.conf
@@ -19,6 +19,7 @@
 
 
 
+# Comments: use '#' for comment lines and ';' (following a space) for inline comments
 
 # The DEFAULT allows a global definition of the options. They can be overridden
 # in each jail afterwards.