diff --git a/lib/rubocop.rb b/lib/rubocop.rb
index e7cf7c78588..a67bcf8b6d6 100644
--- a/lib/rubocop.rb
+++ b/lib/rubocop.rb
@@ -629,6 +629,6 @@
 require_relative 'rubocop/target_ruby'
 require_relative 'rubocop/yaml_duplication_checker'
 
-unless File.exist?("#{__dir__}/../Gemfile") # Check if we are a gem
+unless File.exist?("#{__dir__}/../rubocop.gemspec") # Check if we are a gem
   RuboCop::ResultCache.rubocop_required_features = $LOADED_FEATURES - before_us
 end