diff --git a/guides/Rakefile b/guides/Rakefile
index 59643a464f..383cb5898e 100644
--- a/guides/Rakefile
+++ b/guides/Rakefile
@@ -78,7 +78,7 @@ task :test do
   templates = Dir.glob("bug_report_templates/*.rb")
   counter = templates.count do |file|
     puts "--- Running #{file}"
-    Bundler.clean_system(Gem.ruby, "-w", file) ||
+    Bundler.unbundled_system(Gem.ruby, "-w", file) ||
       puts("+++ 💥 FAILED (exit #{$?.exitstatus})")
   end
   puts "+++ #{counter} / #{templates.size} templates executed successfully"