diff --git a/core/lib/generators/refinery/cms/cms_generator.rb b/core/lib/generators/refinery/cms/cms_generator.rb
index 27a12c7358..92b77f0305 100644
--- a/core/lib/generators/refinery/cms/cms_generator.rb
+++ b/core/lib/generators/refinery/cms/cms_generator.rb
@@ -222,10 +222,10 @@ def run_additional_generators!
       generator_args = []
       generator_args << '--quiet' if self.options[:quiet]
       Refinery::CoreGenerator.start generator_args
-      Refinery::AuthenticationGenerator.start generator_args
-      Refinery::ResourcesGenerator.start generator_args
-      Refinery::PagesGenerator.start generator_args
-      Refinery::ImagesGenerator.start generator_args
+      Refinery::AuthenticationGenerator.start generator_args if defined?(Refinery::AuthenticationGenerator)
+      Refinery::ResourcesGenerator.start generator_args if defined?(Refinery::ResourcesGenerator)
+      Refinery::PagesGenerator.start generator_args if defined?(Refinery::PagesGenerator)
+      Refinery::ImagesGenerator.start generator_args if defined?(Refinery::ImagesGenerator)
       Refinery::I18nGenerator.start generator_args if defined?(Refinery::I18nGenerator)
     end