diff --git a/plugins/network/frontend/views/NetworkDeviceForm.vue b/plugins/network/frontend/views/NetworkDeviceForm.vue
index 87fc0271..a10fe551 100644
--- a/plugins/network/frontend/views/NetworkDeviceForm.vue
+++ b/plugins/network/frontend/views/NetworkDeviceForm.vue
@@ -254,10 +254,12 @@
           </div>
         </fieldset>
 
-        <!-- Site-defined custom fields for network devices -->
-        <fieldset>
-          <CustomFieldsInputs ref="customFieldsRef" :assettypeid="NETWORK_ASSETTYPEID" :assetid="currentAssetId" />
-        </fieldset>
+        <!-- Site-defined custom fields for network devices.
+             NOT wrapped in a fieldset: the component renders nothing when a site
+             has defined no custom fields, but a fieldset draws its border either
+             way, so an empty box appeared after Notes. Every other asset form
+             places this bare; this one was the exception. -->
+        <CustomFieldsInputs ref="customFieldsRef" :assettypeid="NETWORK_ASSETTYPEID" :assetid="currentAssetId" />
 
         <!-- Form Actions -->
         <div class="form-actions">