diff --git a/src/DuplicatesIndex/DefaultMariaDbDuplicatesIndex.php b/src/DuplicatesIndex/DefaultMariaDbDuplicatesIndex.php
index 5c8e3eea..f1bc3b83 100644
--- a/src/DuplicatesIndex/DefaultMariaDbDuplicatesIndex.php
+++ b/src/DuplicatesIndex/DefaultMariaDbDuplicatesIndex.php
@@ -117,6 +117,8 @@ public function recreateIndex()
 
                 $this->updateDuplicateIndexForCustomer($customer, true);
             }
+
+            \Pimcore::collectGarbage();
         }
     }