diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 2775091310590..d5b0d875ede44 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -386,7 +386,7 @@ public function getCalendarsForUser($principalUri) {
 			$subSelect->select('resourceid')
 				->from('dav_shares', 'd')
 				->where($subSelect->expr()->eq('d.access', $select->createNamedParameter(Backend::ACCESS_UNSHARED, IQueryBuilder::PARAM_INT), IQueryBuilder::PARAM_INT))
-				->andWhere($subSelect->expr()->eq('d.principaluri', $select->createNamedParameter($principalUri, IQueryBuilder::PARAM_STR), IQueryBuilder::PARAM_STR));
+				->andWhere($subSelect->expr()->in('d.principaluri', $select->createNamedParameter($principals, IQueryBuilder::PARAM_STR_ARRAY), IQueryBuilder::PARAM_STR_ARRAY));
 
 			$select->select($fields)
 				->from('dav_shares', 's')
diff --git a/apps/dav/lib/CardDAV/CardDavBackend.php b/apps/dav/lib/CardDAV/CardDavBackend.php
index 06f6bf9448e4a..d1631bb762cca 100644
--- a/apps/dav/lib/CardDAV/CardDavBackend.php
+++ b/apps/dav/lib/CardDAV/CardDavBackend.php
@@ -136,7 +136,7 @@ public function getAddressBooksForUser($principalUri) {
 			$subSelect->select('id')
 				->from('dav_shares', 'd')
 				->where($subSelect->expr()->eq('d.access', $select->createNamedParameter(\OCA\DAV\CardDAV\Sharing\Backend::ACCESS_UNSHARED, IQueryBuilder::PARAM_INT), IQueryBuilder::PARAM_INT))
-				->andWhere($subSelect->expr()->eq('d.principaluri', $select->createNamedParameter($principalUri, IQueryBuilder::PARAM_STR), IQueryBuilder::PARAM_STR));
+				->andWhere($subSelect->expr()->in('d.principaluri', $select->createNamedParameter($principals, IQueryBuilder::PARAM_STR_ARRAY), IQueryBuilder::PARAM_STR_ARRAY));
 
 
 			$select->select(['a.id', 'a.uri', 'a.displayname', 'a.principaluri', 'a.description', 'a.synctoken', 's.access'])