diff --git a/lib/http/cookie.rb b/lib/http/cookie.rb
index 6e4be4e..7ea165d 100644
--- a/lib/http/cookie.rb
+++ b/lib/http/cookie.rb
@@ -183,7 +183,7 @@ class HTTP::Cookie
         origin = val
       else
         setter = :"#{skey}="
-        send(setter, val) if respond_to?(setter)
+        __send__(setter, val) if respond_to?(setter)
       end
     }
     if @name.nil? || @value.nil?