diff --git a/types/wcwidth/index.d.ts b/types/wcwidth/index.d.ts
index 99b2107ba9..da9920a611 100644
--- a/types/wcwidth/index.d.ts
+++ b/types/wcwidth/index.d.ts
@@ -5,6 +5,4 @@
 
 declare function wcwidth(input: string): number;
 
-declare namespace wcwidth {}
-
 export = wcwidth;
diff --git a/types/wcwidth/wcwidth-tests.ts b/types/wcwidth/wcwidth-tests.ts
index 56e4987a7a..11f150a73c 100644
--- a/types/wcwidth/wcwidth-tests.ts
+++ b/types/wcwidth/wcwidth-tests.ts
@@ -1,4 +1,4 @@
-import * as wcwidth from 'wcwidth';
+import wcwidth = require('wcwidth');
 
 const length1 = wcwidth('한');   // => 2