diff --git a/lib/hashie/extensions/coercion.rb b/lib/hashie/extensions/coercion.rb
index <HASH>..<HASH> 100644
--- a/lib/hashie/extensions/coercion.rb
+++ b/lib/hashie/extensions/coercion.rb
@@ -2,7 +2,7 @@ module Hashie
   module Extensions
     module Coercion
       def self.included(base)
-        base.send :extend, ClassMethods
+        base.extend ClassMethods
         base.send :include, InstanceMethods
       end
Object#extend is a public method