[horde] phptype error

[info at media-art.be]

I get an error when logging into horde:

A fatal error has occurred:
Required 'phptype' not specified in authentication configuration.
[line 89 of 
/usr/local/psa/home/vhosts/media-art.be/httpdocs/horde/lib/Auth/sql.php]

Below is the code I changed, assuming this is right.

/horde/config/horde.php

line 78 : added 'sql'
line 134 : replaced 'none' with 'sql'

line 143 : $conf[prefs][params][phpytpe] = 'sql'

Does anyone have had this error too?
Did I forget something?