diff --git a/types/react-alice-carousel/index.d.ts b/types/react-alice-carousel/index.d.ts
index a2f67f5711..5cb94df7dc 100644
--- a/types/react-alice-carousel/index.d.ts
+++ b/types/react-alice-carousel/index.d.ts
@@ -174,8 +174,8 @@ export interface Props {
 }
 
 export function slideTo(index: number): void;
-export function slidePrev(index: number): void;
-export function slideNext(index: number): void;
+export function slidePrev(): void;
+export function slideNext(): void;
 
 export default class ReactAliceCarousel extends React.PureComponent<Props> {
   slideTo(index: number): void;