fix in sql in down path of migrations, re #5313, re #5770

Merge request studip/studip!4416

2 files changed, 2 insertions, 2 deletions

diff --git a/db/migrations/5.3.29_add_index_blubber_comments_mkdate.php b/db/migrations/5.3.29_add_index_blubber_comments_mkdate.php
index 1d7ed7a..70c6655 100644
--- a/db/migrations/5.3.29_add_index_blubber_comments_mkdate.php
+++ b/db/migrations/5.3.29_add_index_blubber_comments_mkdate.php
@@ -15,6 +15,6 @@ class AddIndexBlubberCommentsMkdate extends Migration
 
     public function down()
     {
-        DBManager::get()->exec("ALTER TABLE `blubber_comments` DROP INDEX (`mkdate`)");
+        DBManager::get()->exec("ALTER TABLE `blubber_comments` DROP INDEX `mkdate`");
     }
 }
diff --git a/db/migrations/5.5.33_add_index_wikipages_parentid.php b/db/migrations/5.5.33_add_index_wikipages_parentid.php
index bcbda7e..d9926b6 100644
--- a/db/migrations/5.5.33_add_index_wikipages_parentid.php
+++ b/db/migrations/5.5.33_add_index_wikipages_parentid.php
@@ -15,6 +15,6 @@ class AddIndexWikipagesParentid extends Migration
 
     public function down()
     {
-        DBManager::get()->exec("ALTER TABLE `wiki_pages` DROP INDEX (`parent_id`)");
+        DBManager::get()->exec("ALTER TABLE `wiki_pages` DROP INDEX `parent_id`");
     }
 }