diff --git a/openflexure_microscope/api/static/src/components/appContent.vue b/openflexure_microscope/api/static/src/components/appContent.vue
index 5a12b5ad..c2553cc1 100644
--- a/openflexure_microscope/api/static/src/components/appContent.vue
+++ b/openflexure_microscope/api/static/src/components/appContent.vue
@@ -86,6 +86,8 @@
           <i class="material-icons">{{ plugin.icon || "extension" }}</i>
         </tabIcon>
 
+        <hr id="extension-tab-divider" />
+
         <tabIcon
           id="settings-tab-icon"
           class="uk-margin-auto-top"