diff --git a/sugar.d.ts b/sugar.d.ts
index 92777d797..2461b9b47 100644
--- a/sugar.d.ts
+++ b/sugar.d.ts
@@ -136,7 +136,8 @@ declare namespace sugarjs {
       findIndex<T>(instance: T[], search: T|searchFn<T>, context?: any): number;
       findIndexFromIndex<T>(instance: T[], startIndex: number, loop?: boolean, ...args: any[]): T;
       findIndexFromIndex<T>(instance: T[], startIndex: number, ...args: any[]): T;
-      first<T>(instance: T[], num?: number): T;
+      first<T>(instance: T[]): T;
+      first<T>(instance: T[], num: number): T[];
       flatten<T>(instance: T[], limit?: number): T[];
       forEachFromIndex<T>(instance: T[], startIndex: number, loop?: boolean, ...args: any[]): T;
       forEachFromIndex<T>(instance: T[], startIndex: number, ...args: any[]): T;
@@ -148,7 +149,8 @@ declare namespace sugarjs {
       intersect<T>(instance: T[], arr: T[]): T[];
       isEmpty<T>(instance: T[]): boolean;
       isEqual<T>(instance: T[], arr: T[]): boolean;
-      last<T>(instance: T[], num?: number): T;
+      last<T>(instance: T[]): T;
+      last<T>(instance: T[], num: number): T[];
       least<T, U>(instance: T[], all?: boolean, map?: string|mapFn<T, U>): T[];
       least<T, U>(instance: T[], map?: string|mapFn<T, U>): T[];
       map<T, U>(instance: T[], map: string|mapFn<T, U>, context?: any): U[];
@@ -1232,4 +1234,4 @@ declare module "sugar" {
   export = Sugar;
 }
 
-declare var Sugar: sugarjs.Sugar;
\ No newline at end of file
+declare var Sugar: sugarjs.Sugar;