diff --git a/features/site_configuration.feature b/features/site_configuration.feature
index 2d00f9b7..3aace794 100644
--- a/features/site_configuration.feature
+++ b/features/site_configuration.feature
@@ -44,9 +44,11 @@ Feature: Site configuration
     Given I have an "Rakefile" file that contains "I want to be excluded"
     And I have an "README" file that contains "I want to be excluded"
     And I have an "index.html" file that contains "I want to be included"
+    And I have a "Gemfile" file that contains "gem 'include-me'"
     And I have a configuration file with "exclude" set to "['Rakefile', 'README']"
     When I run jekyll build
     Then I should see "I want to be included" in "_site/index.html"
+    And the "_site/Gemfile" file should exist
     And the "_site/Rakefile" file should not exist
     And the "_site/README" file should not exist