diff --git a/src/MenuBuilder/HtmlBuilder.php b/src/MenuBuilder/HtmlBuilder.php
index 9cdb063..ca2e10f 100644
--- a/src/MenuBuilder/HtmlBuilder.php
+++ b/src/MenuBuilder/HtmlBuilder.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace MenuBuilder;
+
 class HtmlBuilder {
 	/**
 	 * Create an HTML link.