diff --git a/types/dhtmlxscheduler/index.d.ts b/types/dhtmlxscheduler/index.d.ts
index 3f075861ab..0395090d75 100644
--- a/types/dhtmlxscheduler/index.d.ts
+++ b/types/dhtmlxscheduler/index.d.ts
@@ -1769,12 +1769,13 @@ interface SchedulerStatic {
 
 	/**
 	 * displays the specified view and date (doesn't invoke any events)
+	 * the function will just refresh the current view if invoked without parameters.
 	 * @param date the date to set
 	 * @param view the view name
 	*/
-	updateView(date: Date, view: string): void;
+	updateView(date?: Date, view?: string): void;
 
 }
 
 declare var scheduler: SchedulerStatic;
-declare var Scheduler: SchedulerEnterprise;
\ No newline at end of file
+declare var Scheduler: SchedulerEnterprise;