diff --git a/core/modules/comment/src/Tests/Update/CommentUpdateTest.php b/core/modules/comment/src/Tests/Update/CommentUpdateTest.php
index bf4baff3ca..f4c9c7947e 100644
--- a/core/modules/comment/src/Tests/Update/CommentUpdateTest.php
+++ b/core/modules/comment/src/Tests/Update/CommentUpdateTest.php
@@ -81,7 +81,7 @@ public function testCommentEntityTypeRequired() {
     $this->assertEqual(2, Database::getConnection()->query('SELECT count(*) FROM {comment_field_data}')->fetchField());
     if (Database::getConnection()->driver() === 'mysql') {
       $table_description = \Drupal::database()
-        ->query('DESCRIBE comment_field_data')
+        ->query('DESCRIBE {comment_field_data}')
         ->fetchAllAssoc('Field');
       $this->assertEqual($table_description['entity_type']->Null, 'YES');
     }
@@ -91,7 +91,7 @@ public function testCommentEntityTypeRequired() {
     $this->assertEqual(2, Database::getConnection()->query('SELECT count(*) FROM {comment_field_data}')->fetchField());
     if (Database::getConnection()->driver() === 'mysql') {
       $table_description = \Drupal::database()
-        ->query('DESCRIBE comment_field_data')
+        ->query('DESCRIBE {comment_field_data}')
         ->fetchAllAssoc('Field');
       $this->assertEqual($table_description['entity_type']->Null, 'NO');
     }