diff --git a/activerecord/test/cases/adapters/abstract_mysql_adapter/connection_test.rb b/activerecord/test/cases/adapters/abstract_mysql_adapter/connection_test.rb
index 523029b46ca82..5737e77f7fa97 100644
--- a/activerecord/test/cases/adapters/abstract_mysql_adapter/connection_test.rb
+++ b/activerecord/test/cases/adapters/abstract_mysql_adapter/connection_test.rb
@@ -6,8 +6,6 @@
 class ConnectionTest < ActiveRecord::AbstractMysqlTestCase
   include ConnectionHelper
 
-  fixtures :comments
-
   def setup
     super
     @subscriber = SQLSubscriber.new
diff --git a/activerecord/test/cases/adapters/postgresql/connection_test.rb b/activerecord/test/cases/adapters/postgresql/connection_test.rb
index 14df538e41f20..04c9b35e3d39a 100644
--- a/activerecord/test/cases/adapters/postgresql/connection_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/connection_test.rb
@@ -10,8 +10,6 @@ class PostgresqlConnectionTest < ActiveRecord::PostgreSQLTestCase
     class NonExistentTable < ActiveRecord::Base
     end
 
-    fixtures :comments
-
     def setup
       super
       @subscriber = SQLSubscriber.new