diff --git a/_includes/nav.html b/_includes/nav.html
index a118039..4bf7adf 100644
--- a/_includes/nav.html
+++ b/_includes/nav.html
@@ -1,5 +1,5 @@
 <nav>
 	{% for item in site.data.nav.list %}
-	<a href="{{site.baseurl}}{{item.url}}"{% if item.url == page.url %} class="a-active" {% endif %}>{{item.title}}</a>
+	<a href="{{site.baseurl}}{{item.url}}"{% if item.url contains page.url %} class="a-active" {% endif %}>{{item.title}}</a>
 	{% endfor %}
 </nav>