diff --git a/underscore.string/underscore.string.d.ts b/underscore.string/underscore.string.d.ts
index db9ec042d..9c828fdf7 100644
--- a/underscore.string/underscore.string.d.ts
+++ b/underscore.string/underscore.string.d.ts
@@ -562,7 +562,8 @@ interface UnderscoreStringStaticExports {
     toBoolean(str: string, trueValues?: any[], falseValues?: any[]): boolean;
 
 }
-declare module "underscore.string" {
-export = UnderscoreStringStatic;
+declare module 'underscore.string' {
+    var underscoreString: UnderscoreStringStatic;
+    export = underscoreString;
 }
 // TODO interface UnderscoreString extends Underscore<string>