diff --git a/xml/chapter2/section3/subsection4.xml b/xml/chapter2/section3/subsection4.xml
index bf176a3ab..3c7f42ef4 100644
--- a/xml/chapter2/section3/subsection4.xml
+++ b/xml/chapter2/section3/subsection4.xml
@@ -766,16 +766,16 @@ function make_leaf_set(pairs) {
     <SNIPPET HIDE="yes">
       <NAME>make_leaf_set_example</NAME>
       <JAVASCRIPT>
-make_leaf_set( list( make_leaf("A", 4),
-                     make_leaf("B", 2),
-                     make_leaf("C", 1),
-                     make_leaf("D", 1) ) );
+make_leaf_set( list( list("A", 4),
+                     list("B", 2),
+                     list("C", 1),
+                     list("D", 1) ) );
       </JAVASCRIPT>
       <JAVASCRIPT_TEST>
-head(make_leaf_set( list( make_leaf("A", 4),
-                          make_leaf("B", 2),
-                          make_leaf("C", 1),
-                          make_leaf("D", 1) ) ) );
+head(make_leaf_set( list( list("A", 4),
+                          list("B", 2),
+                          list("C", 1),
+                          list("D", 1) ) ) );
       </JAVASCRIPT_TEST>
     </SNIPPET>
   </TEXT>