diff --git a/src/Worker/ExpirePosts.php b/src/Worker/ExpirePosts.php
index 3f1075db5d..3659edfdee 100644
--- a/src/Worker/ExpirePosts.php
+++ b/src/Worker/ExpirePosts.php
@@ -119,7 +119,7 @@ class ExpirePosts
 		Logger::notice('Adding missing entries');
 
 		$rows = 0;
-		$userposts = DBA::select('post-user', [], ["`uri-id` not in (select `uri-id` from `post`)"], ['group_by' => ['uri-id']]);
+		$userposts = DBA::select('post-user', [], ["`uri-id` not in (select `uri-id` from `post`)"]);
 		while ($fields = DBA::fetch($userposts)) {
 			$post_fields = DBStructure::getFieldsForTable('post', $fields);
 			DBA::insert('post', $post_fields, Database::INSERT_IGNORE);
@@ -133,7 +133,7 @@ class ExpirePosts
 		}
 
 		$rows = 0;
-		$userposts = DBA::select('post-user', [], ["`gravity` = ? AND `uri-id` not in (select `uri-id` from `post-thread`)", GRAVITY_PARENT], ['group_by' => ['uri-id']]);
+		$userposts = DBA::select('post-user', [], ["`gravity` = ? AND `uri-id` not in (select `uri-id` from `post-thread`)", GRAVITY_PARENT]);
 		while ($fields = DBA::fetch($userposts)) {
 			$post_fields = DBStructure::getFieldsForTable('post-thread', $fields);
 			$post_fields['commented'] = $post_fields['changed'] = $post_fields['created'];