diff --git a/lib/private/Preview/Db/PreviewMapper.php b/lib/private/Preview/Db/PreviewMapper.php
index ca6f9ff666d77..20e4f0f36a268 100644
--- a/lib/private/Preview/Db/PreviewMapper.php
+++ b/lib/private/Preview/Db/PreviewMapper.php
@@ -210,7 +210,8 @@ public function getLocationId(string $bucket, string $objectStore): string {
 
 	public function deleteAll(): void {
 		$delete = $this->db->getQueryBuilder();
-		$delete->delete($this->getTableName());
+		$delete->delete($this->getTableName())
+			->executeStatement();
 	}
 
 	/**