diff --git a/lib/Db/CardMapper.php b/lib/Db/CardMapper.php
index 1b3e73f46..c1be5ae76 100644
--- a/lib/Db/CardMapper.php
+++ b/lib/Db/CardMapper.php
@@ -228,7 +228,7 @@ public function findAssignedCards($boardId, $username) {
 
 	public function findOverdue() {
 		$qb = $this->db->getQueryBuilder();
-		$qb->select('id,title,duedate,notified')
+		$qb->select('id', 'title', 'duedate', 'notified')
 			->from('deck_cards')
 			->where($qb->expr()->lt('duedate', $qb->createFunction('NOW()')))
 			->andWhere($qb->expr()->eq('archived', $qb->createNamedParameter(false, IQueryBuilder::PARAM_BOOL)))
@@ -238,7 +238,7 @@ public function findOverdue() {
 
 	public function findUnexposedDescriptionChances() {
 		$qb = $this->db->getQueryBuilder();
-		$qb->select('id,title,duedate,notified,description_prev,last_editor,description')
+		$qb->select('id', 'title', 'duedate', 'notified', 'description_prev', 'last_editor', 'description')
 			->from('deck_cards')
 			->where($qb->expr()->isNotNull('last_editor'))
 			->andWhere($qb->expr()->isNotNull('description_prev'));