diff --git a/core/modules/system/src/Tests/Database/SchemaTest.php b/core/modules/system/src/Tests/Database/SchemaTest.php
index b807fd8..0a44375 100644
--- a/core/modules/system/src/Tests/Database/SchemaTest.php
+++ b/core/modules/system/src/Tests/Database/SchemaTest.php
@@ -213,9 +213,8 @@ function tryInsert($table = 'test_table') {
   function checkSchemaComment($description, $table, $column = NULL) {
     if (method_exists(Database::getConnection()->schema(), 'getComment')) {
       $comment = Database::getConnection()->schema()->getComment($table, $column);
-      $db_type = Database::getConnection()->databaseType();
       // The schema comment truncation for mysql is different.
-      if ($db_type == 'mysql') {
+      if (Database::getConnection()->databaseType() == 'mysql') {
         $max_length = $column ? 255 : 60;
         $description = Unicode::truncate($description, $max_length, TRUE, TRUE);
       }