diff --git a/railties/lib/initializer.rb b/railties/lib/initializer.rb
index bbaa313faec0d8b1aea9ad80a7cbf3a9bdc9e40d..7273cea0c50b9b894a38553d643504ba5fcbfae1 100644
--- a/railties/lib/initializer.rb
+++ b/railties/lib/initializer.rb
@@ -450,7 +450,7 @@ def initialize_database
     def initialize_database_middleware
       if configuration.frameworks.include?(:active_record)
         if configuration.frameworks.include?(:action_controller) &&
-            ActionController::Base.session_store == ActiveRecord::SessionStore
+            ActionController::Base.session_store.name == 'ActiveRecord::SessionStore'
           configuration.middleware.insert_before :"ActiveRecord::SessionStore", ActiveRecord::ConnectionAdapters::ConnectionManagement
           configuration.middleware.insert_before :"ActiveRecord::SessionStore", ActiveRecord::QueryCache
         else