diff --git a/web/making_a_web_site.anubis b/web/making_a_web_site.anubis
index 92ed4e0..8803861 100644
--- a/web/making_a_web_site.anubis
+++ b/web/making_a_web_site.anubis
@@ -3716,7 +3716,7 @@ define String
            
            current      = if h is
                           {
-                            //empty                 then "",
+                            empty_attr            then "",
                             id(id_name)           then
                                " id=\"" + id_name + "\"",
                             class(class_name)     then "",   //do nothing here, because we accumulate the class until we have some other attributes
diff --git a/web/types/making_a_web_site.anubis b/web/types/making_a_web_site.anubis
index 91ea121..b23b5fa 100644
--- a/web/types/making_a_web_site.anubis
+++ b/web/types/making_a_web_site.anubis
@@ -641,7 +641,7 @@ public type HTML_tooltip:
 
 
 public type CoreAttrs:
-  //empty,
+  empty_attr,
   id        (String),                   //A unique identifier for the element.
                                         //There must not be multiple elements in a document that have the same id value.
   class     (String),                   //A name of a classification, or list of names of classifications, to which the element belongs
--
libgit2 0.21.4