diff --git a/apps/federatedfilesharing/lib/FederatedShareProvider.php b/apps/federatedfilesharing/lib/FederatedShareProvider.php
index 9063bbf745..5623b60ad0 100644
--- a/apps/federatedfilesharing/lib/FederatedShareProvider.php
+++ b/apps/federatedfilesharing/lib/FederatedShareProvider.php
@@ -608,7 +608,7 @@ class FederatedShareProvider implements IShareProvider {
 			);
 		}
 
-		$qb->innerJoin('s', 'filecache' ,'f', 's.file_source = f.fileid');
+		$qb->innerJoin('s', 'filecache' ,'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
 		$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
 
 		$qb->orderBy('id');
diff --git a/apps/sharebymail/lib/ShareByMailProvider.php b/apps/sharebymail/lib/ShareByMailProvider.php
index 332f1c0cf7..ec9568b734 100644
--- a/apps/sharebymail/lib/ShareByMailProvider.php
+++ b/apps/sharebymail/lib/ShareByMailProvider.php
@@ -839,7 +839,7 @@ class ShareByMailProvider implements IShareProvider {
 			);
 		}
 
-		$qb->innerJoin('s', 'filecache' ,'f', 's.file_source = f.fileid');
+		$qb->innerJoin('s', 'filecache' ,'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
 		$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
 
 		$qb->orderBy('id');
diff --git a/lib/private/Share20/DefaultShareProvider.php b/lib/private/Share20/DefaultShareProvider.php
index bf8bcc9c6d..feae147066 100644
--- a/lib/private/Share20/DefaultShareProvider.php
+++ b/lib/private/Share20/DefaultShareProvider.php
@@ -493,7 +493,7 @@ class DefaultShareProvider implements IShareProvider {
 			);
 		}
 
-		$qb->innerJoin('s', 'filecache' ,'f', 's.file_source = f.fileid');
+		$qb->innerJoin('s', 'filecache' ,'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
 		$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
 
 		$qb->orderBy('id');