diff --git a/FAQ b/FAQ
index 3e316ad7..d4bf160a 100644
--- a/FAQ
+++ b/FAQ
@@ -944,13 +944,23 @@ A. Contributors
   partition creation. Example:
 
  
-     cryptsetup luksHeaderBackup --header-backup-file h /dev/mapper/c1
+     cryptsetup luksHeaderBackup --header-backup-file h <device>
  
   To restore, use the inverse command, i.e.
 
-     cryptsetup luksHeaderRestore --header-backup-file h /dev/mapper/c1
+     cryptsetup luksHeaderRestore --header-backup-file h <device>
  
 
+ * How do I test a LUKS header?
+
+  Use
+
+     cryptsetup -v isLuks <device>
+ 
+  on the device. Without the "-v" it just signals its result via
+  exit-status.
+
+
  * How do I backup a LUKS or dm-crypt partition?
 
   There are two options, a sector-image and a plain file or