diff --git a/activesupport/lib/active_support/whiny_nil.rb b/activesupport/lib/active_support/whiny_nil.rb
index d600ea48256ba5f9ac68e6da3cb7f354534d8e35..11b05efac172621f7a957ba37f33323cb2aaf89e 100644
--- a/activesupport/lib/active_support/whiny_nil.rb
+++ b/activesupport/lib/active_support/whiny_nil.rb
@@ -11,7 +11,7 @@
 # classes in NilClass::WHINERS the error message suggests which could be the
 # actual intended class:
 #
-#   $ rails runner nil.destroy 
+#   $ rails runner nil.destroy
 #   ...
 #   You might have expected an instance of ActiveRecord::Base.
 #   ...