diff --git a/modules/chapter1/nav.adoc b/modules/chapter1/nav.adoc
index 4af161e..799ed6f 100644
--- a/modules/chapter1/nav.adoc
+++ b/modules/chapter1/nav.adoc
@@ -3,5 +3,4 @@
 ** xref:section2.adoc[]
 ** xref:section3.adoc[]
 ** xref:section4.adoc[]
-** xref:section5.adoc[]
-** xref:section6.adoc[]
\ No newline at end of file
+** xref:section5.adoc[]
\ No newline at end of file