diff --git a/_config.yml b/_config.yml
index ebaae66..9f91cb4 100644
--- a/_config.yml
+++ b/_config.yml
@@ -113,6 +113,7 @@ defaults:
     scope:
       path: tags
     values:
+      tab_active: Tags
       location: Tag
       breadcrumb:
         -
@@ -125,6 +126,7 @@ defaults:
     scope:
       path: categories
     values:
+      tab_active: Categories
       location: Category
       breadcrumb:
         -
diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index 9e5ab00..65d162a 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -41,8 +41,9 @@
     {% endif %}
 
     <li class="nav-item d-flex justify-content-center
-      {% if item.url == page_urls.last or
-        item.name == "Home" and page.layout == "home" %}active{% endif %}">
+      {% if item.url == page_urls.last
+        or item.name == page.tab_active
+        or item.name == "Home" and page.layout == "home" %}active{% endif %}">
       <a href="{{ ref }}" class="nav-link d-flex justify-content-center align-items-center w-100">
         <i class="fa-fw {{ item.icon }} ml-3 mr-3 unloaded"></i>
         <span>{{ item.name | upcase }}</span>