diff --git a/fullCalendar/fullCalendar.d.ts b/fullCalendar/fullCalendar.d.ts
index 7552d5bfd..6400dba7e 100644
--- a/fullCalendar/fullCalendar.d.ts
+++ b/fullCalendar/fullCalendar.d.ts
@@ -198,10 +198,10 @@ declare module FullCalendar {
         eventConstraint?: BusinessHours | Timespan;
         eventDragStart?: (event: EventObject, jsEvent: MouseEvent, ui: any, view: ViewObject) => void;
         eventDragStop?: (event: EventObject, jsEvent: MouseEvent, ui: any, view: ViewObject) => void;
-        eventDrop?: (event: EventObject, dayDelta: number, minuteDelta: number, revertFunc: Function, jsEvent: Event, ui: any, view: ViewObject) => void;
+        eventDrop?: (event: EventObject, delta: moment.Duration, revertFunc: Function, jsEvent: Event, ui: any, view: ViewObject) => void;
         eventResizeStart?: (event: EventObject, jsEvent: MouseEvent, ui: any, view: ViewObject) => void;
         eventResizeStop?: (event: EventObject, jsEvent: MouseEvent, ui: any, view: ViewObject) => void;
-        eventResize?: (event: EventObject, dayDelta: number, minuteDelta: number, revertFunc: Function, jsEvent: Event, ui: any, view: ViewObject) => void;
+        eventResize?: (event: EventObject, delta: moment.Duration, revertFunc: Function, jsEvent: Event, ui: any, view: ViewObject) => void;
     }
     /*
     * Selection - http://arshaw.com/fullcalendar/docs/selection/