diff --git a/gui/scripts/popup.js b/gui/scripts/popup.js
index 587606e..4b5cc68 100644
--- a/gui/scripts/popup.js
+++ b/gui/scripts/popup.js
@@ -4,6 +4,7 @@
 
 // Import modules.
 import compat from "./compat.js";
+import UI from "./interface.JS";
 import texts from "./read.JS";
 
 // Call the main function.