diff --git a/config/initializers/rspec_generator.rb b/config/initializers/rspec_generator.rb
index b5f8d91c..514eba18 100644
--- a/config/initializers/rspec_generator.rb
+++ b/config/initializers/rspec_generator.rb
@@ -1,4 +1,4 @@
-if Rails.env.test?
+if Rails.env.test? && defined?(Locomotive::Application) # does not need it for the engine version
   Locomotive::Application.configure do
     config.generators do |g|
       g.integration_tool :rspec