diff --git a/src/Entity/Part.php b/src/Entity/Part.php
index a420722c..16be2d6c 100644
--- a/src/Entity/Part.php
+++ b/src/Entity/Part.php
@@ -665,7 +665,7 @@ class Part extends AttachmentContainingDBElement
      *
      * @throws \Exception if there was an error
      */
-    public function getAveragePrice(int $quantity = 1, $multiplier = null) : float
+    public function getAveragePrice(int $quantity = 1, $multiplier = null) : ?float
     {
         $prices = $this->getPrices($quantity, $multiplier, true);
         $average_price = null;
diff --git a/templates/Parts/info/show_part_info.html.twig b/templates/Parts/info/show_part_info.html.twig
index 913b2d11..5fd18d89 100644
--- a/templates/Parts/info/show_part_info.html.twig
+++ b/templates/Parts/info/show_part_info.html.twig
@@ -79,7 +79,7 @@
                     </div>
                 {% endif %}
                 <div class="tab-pane fade {% if part.comment is empty %} show active{% endif %}" id="attachments" role="tabpanel" aria-labelledby="profile-tab">
-                    Test
+                    {% include "Parts/info/_attachments_info.html.twig" %}
                 </div>
 
                 <div class="tab-pane fade" id="suppliers" role="tabpanel" aria-labelledby="profile-tab">