diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index 3c0d2b18d9f580af664d60a2b569459a5ae8f12d..c155f29973c29c59a5fad49fd1e85dfe95d29498 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -344,11 +344,7 @@ def test_create_table_with_binary_column
     columns = Person.connection.columns(:binary_testings)
     data_column = columns.detect { |c| c.name == "data" }
 
-    if current_adapter?(:MysqlAdapter) or current_adapter?(:Mysql2Adapter)
-      assert_equal '', data_column.default
-    else
-      assert_nil data_column.default
-    end
+    assert_nil data_column.default
 
     Person.connection.drop_table :binary_testings rescue nil
   end