diff --git a/extensions/survey/src/refiner-js.d.ts b/extensions/survey/src/refiner-js.d.ts
index cd12237810..5d63c98e2d 100644
--- a/extensions/survey/src/refiner-js.d.ts
+++ b/extensions/survey/src/refiner-js.d.ts
@@ -1,3 +1,3 @@
 declare module "refiner-js" {
   export default function Refiner(key: string, value: string|object|number|Boolean|Array): void;
-}
\ No newline at end of file
+}