diff --git a/lib/exe/detail.php b/lib/exe/detail.php
index 9981c1d02bf873004a687efe4db1b79d214fdad8..cd3f362ad69b460016ce9e1e055e3db2da0a503e 100644
--- a/lib/exe/detail.php
+++ b/lib/exe/detail.php
@@ -32,8 +32,8 @@ if($conf['allowdebug'] && $INPUT->has('debug')){
 
 $ERROR = false;
 // check image permissions
-$AUTHLEVEL = auth_quickaclcheck($IMG);
-if($AUTHLEVEL >= AUTH_READ){
+$AUTH = auth_quickaclcheck($IMG);
+if($AUTH >= AUTH_READ){
     // check if image exists
     $SRC = mediaFN($IMG);
     if(!@file_exists($SRC)){