diff --git a/primer/1.3/gexf-13-primer.tex b/primer/1.3/gexf-13-primer.tex
index 310b257..738e8ce 100755
--- a/primer/1.3/gexf-13-primer.tex
+++ b/primer/1.3/gexf-13-primer.tex
@@ -931,7 +931,7 @@ \subsubsection{Declaring Dynamic Attributes}
 <gexf ...>
   ...
   <graph mode="dynamic" defaultedgetype="directed">
-    <attributes class="node">
+    <attributes class="node" mode="dynamic">
       <attribute id="2" title="indegree" type="float"/>
       ...
     </attributes>