diff --git a/types/uniqid/index.d.ts b/types/uniqid/index.d.ts
index 4e222ddb5b..39eef672a3 100644
--- a/types/uniqid/index.d.ts
+++ b/types/uniqid/index.d.ts
@@ -1,10 +1,10 @@
 // Type definitions for uniqid 4.1
-// Project: https://github.com/adamhalasz/diet-uniqid/
-// Definitions by: My Self <https://github.com/me>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// Project: https://github.com/adamhalasz/uniqid
+// Definitions by: idchlife <https://github.com/idchlife>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/uniqid
 
 // Commmon function signature
-declare function f(prefix: string): string;
+declare function f(prefix?: string): string;
 
 // let x -> Workaround for ES6 imports
 // Combined type because of assigning to function object in original module