diff --git a/src/infrastructure/storage/lisk/LiskDAOSet.php b/src/infrastructure/storage/lisk/LiskDAOSet.php
index 6d8ebc4483..9c03bc70fd 100644
--- a/src/infrastructure/storage/lisk/LiskDAOSet.php
+++ b/src/infrastructure/storage/lisk/LiskDAOSet.php
@@ -57,6 +57,7 @@ final class LiskDAOSet {
     foreach ($this->subsets as $set) {
       $set->clearSet();
     }
+    $this->subsets = array();
     return $this;
   }