diff --git a/src/globals.d.ts b/src/globals.d.ts
index f1d8376b..9b62f4ed 100644
--- a/src/globals.d.ts
+++ b/src/globals.d.ts
@@ -1,3 +1,5 @@
-declare const iframely: undefined | {
+interface Iframely {
     load(): void;
-};
+}
+
+declare const iframely: Iframely | undefined;