diff --git a/interactjs/interact.d.ts b/interactjs/interact.d.ts
index 495e5e1a3..4e8987375 100644
--- a/interactjs/interact.d.ts
+++ b/interactjs/interact.d.ts
@@ -55,6 +55,7 @@ declare module Interact {
         origin(newValue: HTMLElement): Interactable;
         origin(newValue: SVGElement): Interactable;
         origin(newValue: Point): Interactable;
+        preventDefault(newValue: boolean | string): Interactable;
         rectChecker(): Function;
         rectChecker(newValue: Function): Interactable;
         resizable(): Interactable;