diff --git a/lib/cache/cache.class.php b/lib/cache/cache.class.php
index c26c66f9bc..da995a5075 100644
--- a/lib/cache/cache.class.php
+++ b/lib/cache/cache.class.php
@@ -826,6 +826,7 @@ class cache
         $this->setKey('');
         $this->setTable('');
         $this->setEvent('');
+        $this->setWhere('');
         $this->setObjects([]);
     }