diff --git a/Authentication.md b/Authentication.md
index 381f504..6a5271d 100644
--- a/Authentication.md
+++ b/Authentication.md
@@ -2,22 +2,21 @@ The IFM provides a simple authentication. Note that the permissions are always t
 
 To activate the authentication you have to set `auth` to 1 and set a valid value for `auth_source`.
 
-### authentication mechanisms
+## authentication mechanisms
 Currently there are three supported authentication sources:
 * inline
 * file
 * ldap
 
-#### inline
+### inline
 * syntax: `inline;<USERNAME>:<PASSWORDHASH>`
 * <PASSWORDHASH> has to be a password hash which was generated by PHPs `password_hash` function.
 
-#### file
+### file
 * syntax: `file;<PATH_TO_FILE>`
-* The file has to be readable and has to contain one line.
-* The syntax in the file is analogue to the "inline" syntax: <USERNAME>:<PASSWORDHASH>
+* The file should be a valid htpasswd file. It can be generated using the [htpasswd](https://github.com/misterunknown/ifm#run-image) utility.
 
-#### ldap
+### ldap
 * syntax: `ldap;<SERVER>;<ROOTDN>`
 * <SERVER> has to be the ip or name of the server. You can optional specify the port separated with a colon.
 * <ROOTDN> specifies the rootdn. The IFM prepends "uid=" and the entered username.
\ No newline at end of file