diff --git a/simple-assign/simple-assign.d.ts b/simple-assign/simple-assign.d.ts
index ee122703fa..f16d87fad5 100644
--- a/simple-assign/simple-assign.d.ts
+++ b/simple-assign/simple-assign.d.ts
@@ -4,5 +4,5 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module "simple-assign" {
-  export defualt function(target: any, ...sources: any[]): any;
+  export default function(target: any, ...sources: any[]): any;
 }