diff --git a/types/mui-datatables/index.d.ts b/types/mui-datatables/index.d.ts
index 1ef382e2cb..f997e70405 100644
--- a/types/mui-datatables/index.d.ts
+++ b/types/mui-datatables/index.d.ts
@@ -160,8 +160,8 @@ export interface MUIDataTableOptions {
         rowCount: number,
         page: number,
         rowsPerPage: number,
-        changeRowsPerPage: () => any,
-        changePage: number
+        changeRowsPerPage: (page: string | number) => void,
+        changePage: (newPage: number) => void
     ) => React.ReactNode;
     customRowRender?: (data: any[], dataIndex: number, rowIndex: number) => React.ReactNode;
     customSearch?: (searchQuery: string, currentRow: any[], columns: any[]) => boolean;