diff --git a/underscore/underscore.d.ts b/underscore/underscore.d.ts
index d8d08a3b75..8f8e32d370 100644
--- a/underscore/underscore.d.ts
+++ b/underscore/underscore.d.ts
@@ -67,6 +67,10 @@ declare module _ {
 		(element: T, key: string, list: Dictionary<T>): TResult;
 	}
 
+	type IterateePropertyShorthand = string | number;
+
+	type IterateeMatcherShorthand<T> = Dictionary<T>;
+
 	interface MemoIterator<T, TResult> {
 		(prev: TResult, curr: T, index: number, list: List<T>): TResult;
 	}
@@ -146,7 +150,7 @@ interface UnderscoreStatic {
 	**/
 	map<T, TResult>(
 		list: _.List<T>,
-		iterator: _.ListIterator<T, TResult>,
+		iterator: _.ListIterator<T, TResult> | _.IterateePropertyShorthand | _.IterateeMatcherShorthand<any>,
 		context?: any): TResult[];
 
 	/**
@@ -161,12 +165,13 @@ interface UnderscoreStatic {
 		iterator: _.ObjectIterator<T, TResult>,
 		context?: any): TResult[];
 
+
 	/**
 	* @see _.map
 	**/
 	collect<T, TResult>(
 		list: _.List<T>,
-		iterator: _.ListIterator<T, TResult>,
+		iterator: _.ListIterator<T, TResult> | _.IterateePropertyShorthand | _.IterateeMatcherShorthand<any>,
 		context?: any): TResult[];
 
 	/**
@@ -900,7 +905,7 @@ interface UnderscoreStatic {
 	uniq<T, TSort>(
 		array: _.List<T>,
 		isSorted?: boolean,
-		iterator?: _.ListIterator<T, TSort>,
+		iterator?: _.ListIterator<T, TSort> | _.IterateePropertyShorthand,
 		context?: any): T[];
 
 	/**
@@ -916,7 +921,7 @@ interface UnderscoreStatic {
 	**/
 	unique<T, TSort>(
 		array: _.List<T>,
-		iterator?: _.ListIterator<T, TSort>,
+		iterator?: _.ListIterator<T, TSort> | _.IterateePropertyShorthand,
 		context?: any): T[];
 
 	/**