diff --git a/lib/get_data.lib.php b/lib/get_data.lib.php
index 16f91d4fa..cfa53a81f 100644
--- a/lib/get_data.lib.php
+++ b/lib/get_data.lib.php
@@ -329,7 +329,7 @@ function get_db_create_replace($sql_str){
 function get_class_encrypt(){
     static $cache;
 
-    if( $cache && is_object($obj) ){
+    if( $cache && is_object($cache) ){
         return $cache;
     }