diff --git a/railties/lib/rails/code_statistics.rb b/railties/lib/rails/code_statistics.rb
index fc8717c75219d..7a8f42fe94a0f 100644
--- a/railties/lib/rails/code_statistics.rb
+++ b/railties/lib/rails/code_statistics.rb
@@ -1,4 +1,5 @@
 require 'rails/code_statistics_calculator'
+require 'active_support/core_ext/enumerable'
 
 class CodeStatistics #:nodoc: