diff --git a/lib/private/Preview/Storage/LocalPreviewStorage.php b/lib/private/Preview/Storage/LocalPreviewStorage.php
index a64fdfe295f..13e6a714516 100644
--- a/lib/private/Preview/Storage/LocalPreviewStorage.php
+++ b/lib/private/Preview/Storage/LocalPreviewStorage.php
@@ -310,13 +310,14 @@ class LocalPreviewStorage implements IPreviewStorage {
 		}
 
 		$result = [];
+		$qb = $this->connection->getTypedQueryBuilder();
+		$qb->selectColumns('fileid', 'storage', 'etag', 'mimetype')
+			->from('filecache')
+			->where($qb->expr()->in('fileid', $qb->createParameter('fileIds')))
+			->runAcrossAllShards();
 		foreach (array_chunk($fileIds, 1000) as $chunk) {
-			$qb = $this->connection->getTypedQueryBuilder();
-			$qb->selectColumns('fileid', 'storage', 'etag', 'mimetype')
-				->from('filecache')
-				->where($qb->expr()->in('fileid', $qb->createNamedParameter($chunk, IQueryBuilder::PARAM_INT_ARRAY)));
-			$rows = $qb->runAcrossAllShards()
-				->executeQuery();
+			$qb->setParameter('fileIds', $chunk, IQueryBuilder::PARAM_INT_ARRAY);
+			$rows = $qb->executeQuery();
 			while ($row = $rows->fetchAssociative()) {
 				$result[(int)$row['fileid']] = $row;
 			}
@@ -336,13 +337,14 @@ class LocalPreviewStorage implements IPreviewStorage {
 		}
 
 		$result = [];
+		$qb = $this->connection->getTypedQueryBuilder();
+		$qb->selectColumns('fileid', 'storage', 'etag', 'mimetype', 'parent', 'path_hash')
+			->from('filecache')
+			->where($qb->expr()->in('path_hash', $qb->createParameter('pathHashes')))
+			->runAcrossAllShards();
 		foreach (array_chunk($pathHashes, 1000) as $chunk) {
-			$qb = $this->connection->getTypedQueryBuilder();
-			$qb->selectColumns('fileid', 'storage', 'etag', 'mimetype', 'parent', 'path_hash')
-				->from('filecache')
-				->where($qb->expr()->in('path_hash', $qb->createNamedParameter($chunk, IQueryBuilder::PARAM_STR_ARRAY)));
-			$rows = $qb->runAcrossAllShards()
-				->executeQuery();
+			$qb->setParameter('pathHashes', $chunk, IQueryBuilder::PARAM_STR_ARRAY);
+			$rows = $qb->executeQuery();
 			while ($row = $rows->fetchAssociative()) {
 				$result[$row['path_hash']] = $row;
 			}
diff --git a/tests/lib/Preview/Storage/LocalPreviewStorageTest.php b/tests/lib/Preview/Storage/LocalPreviewStorageTest.php
index dbc3cea5342..14e6419a9d5 100644
--- a/tests/lib/Preview/Storage/LocalPreviewStorageTest.php
+++ b/tests/lib/Preview/Storage/LocalPreviewStorageTest.php
@@ -129,6 +129,7 @@ class LocalPreviewStorageTest extends TestCase {
 		$qbMock = $this->createMock(ITypedQueryBuilder::class);
 		$qbMock->method('selectColumns')->willReturnSelf();
 		$qbMock->method('from')->willReturnSelf();
+		$qbMock->method('where')->willReturnSelf();
 		$qbMock->method('andWhere')->willReturnSelf();
 		$qbMock->method('runAcrossAllShards')->willReturnSelf();
 		$qbMock->method('executeQuery')->willReturn($resultMock);