diff --git a/admin.php b/admin.php
index 9278fab2..a44443d6 100644
--- a/admin.php
+++ b/admin.php
@@ -330,6 +330,8 @@ class AdminPlugin extends Plugin
         // make sure page is not frozen!
         unset($this->grav['page']);
 
+        $this->admin->pagesCount();
+
         // Replace page service with admin.
         $this->grav['page'] = function () use ($self) {
             $page = new Page;
diff --git a/classes/admin.php b/classes/admin.php
index 26720225..520de6e4 100644
--- a/classes/admin.php
+++ b/classes/admin.php
@@ -75,6 +75,11 @@ class Admin
      */
     protected $gpm;
 
+    /**
+     * @var int
+     */
+    protected $pages_count;
+
     /**
      * Constructor.
      *
@@ -404,9 +409,13 @@ class Admin
      *
      * @return array
      */
-    public function countPages()
+    public function pagesCount()
     {
-        return count($this->grav['pages']->all());
+        if (!$this->pages_count) {
+            $this->pages_count = count($this->grav['pages']->all());
+        }
+
+        return $this->pages_count;
     }
 
     /**
diff --git a/themes/grav/templates/partials/nav.html.twig b/themes/grav/templates/partials/nav.html.twig
index f93d9a08..d84c1cd3 100644
--- a/themes/grav/templates/partials/nav.html.twig
+++ b/themes/grav/templates/partials/nav.html.twig
@@ -34,7 +34,7 @@
                 <a href="{{ base_url_relative }}/pages">
                     <i class="fa fa-fw fa-file-text-o"></i> {{ "PLUGIN_ADMIN.PAGES"|tu }}
                     <span class="badges">
-                        <span class="badge count">{{ admin.countPages }}</span>
+                        <span class="badge count">{{ admin.pagesCount }}</span>
                     </span>
                 </a>
             </li>