diff --git a/types/image-preview.d.ts b/types/image-preview.d.ts
index 4792825b0..01a209c91 100644
--- a/types/image-preview.d.ts
+++ b/types/image-preview.d.ts
@@ -20,9 +20,9 @@ export type ImagePreviewOptions =
       closeOnPopstate?: boolean;
       closeIconPosition?: string;
       getContainer?: string | (() => Element);
-      onClose?: () => void;
-      onChange?: (index: number) => void;
-      swipeTo(index: number, options?: SwipeToOptions): void;
+      onClose?(): void;
+      onChange?(index: number): void;
+      swipeTo?(index: number, options?: SwipeToOptions): void;
     };
 
 export class VanImagePreview extends VanPopupMixin {