diff --git a/modules/system/system.install b/modules/system/system.install
index df0db71..a9c1503 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -2728,6 +2728,16 @@ function system_update_7061(&$sandbox) {
     return;
   }
 
+  // Delete stale rows from {upload} where the fid is not in the {files} table.
+  $connection = Database::getConnection();
+  $upload_table_prefix = $connection->tablePrefix('upload');
+  $delete_subquery = db_select('files', 'f');
+  $delete_subquery->fields('f');
+  $delete_subquery->where('f.fid = ' . $upload_table_prefix . 'upload.fid');
+  $deleted_upload_files = db_delete('upload')
+    ->notExists($delete_subquery)
+    ->execute();
+
   if (!isset($sandbox['progress'])) {
     // Retrieve a list of node revisions that have uploaded files attached.
     // DISTINCT queries are expensive, especially when paged, so we store the