diff --git a/lib/util.php b/lib/util.php
index 51d8cc4d64..c7a2c50980 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -242,7 +242,14 @@ class OC_Util {
$errors[]=array('error'=>'Data directory ('.$CONFIG_DATADIRECTORY_ROOT.') not writable by ownCloud
','hint'=>$permissionsHint);
}
- //TODO: check for php modules
+ // check if all required php modules are present
+ if(!class_exists('ZipArchive')){
+ $errors[]=array('error'=>'PHP module ZipArchive not installed.
','hint'=>'Please ask your server administrator to install the module.');
+ }
+
+ if(!function_exists('mb_detect_encoding')){
+ $errors[]=array('error'=>'PHP module mb multibyte not installed.
','hint'=>'Please ask your server administrator to install the module.');
+ }
return $errors;
}