diff --git a/pillar.conf b/pillar.conf
index 3357fbd..3104216 100644
--- a/pillar.conf
+++ b/pillar.conf
@@ -17,7 +17,10 @@
         "HTML by chapter" : {
             "outputType" : #html,
             "template" : "support/templates/chapter.html.template",
-            "separateOutputFiles" : true
+            "separateOutputFiles" : true,
+            "level1" : {
+              "numbering" : false
+            }
         },
         "Markdown by chapter" : {
             "outputType" : #githubmarkdown,