diff --git a/activesupport/lib/active_support/core_ext/kernel/concern.rb b/activesupport/lib/active_support/core_ext/kernel/concern.rb
index bf72caa058eccd5d1bf2568e16e550b1076ee15d..18bcc01fa4185c1e5ce63db319943c4f1fcb3065 100644
--- a/activesupport/lib/active_support/core_ext/kernel/concern.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/concern.rb
@@ -1,6 +1,8 @@
 require 'active_support/core_ext/module/concerning'
 
 module Kernel
+  module_function
+
   # A shortcut to define a toplevel concern, not within a module.
   #
   # See Module::Concerning for more.
diff --git a/activesupport/lib/active_support/core_ext/kernel/reporting.rb b/activesupport/lib/active_support/core_ext/kernel/reporting.rb
index 8afc258df883aa40ff81db764c31b2c8ccb04162..d0197af95fec04c2c67cb3727393788368f4209c 100644
--- a/activesupport/lib/active_support/core_ext/kernel/reporting.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/reporting.rb
@@ -1,4 +1,6 @@
 module Kernel
+  module_function
+
   # Sets $VERBOSE to nil for the duration of the block and back to its original
   # value afterwards.
   #