diff --git a/readme.md b/readme.md
index 0ba9675..ae1739c 100644
--- a/readme.md
+++ b/readme.md
@@ -247,7 +247,7 @@ Returns `true` if the value is a `string` and the `.length` is more than 0.
 
 ##### .nonEmptyStringAndNotWhitespace(value)
 
-Returns `true` if `is.string(value)` and if it's a `string` that is not a whitespace.
+Returns `true` if `is.string(value)` and if it's a `string` that is non-empty and not a whitespace.
 
 ```js
 const values = ['property1', '', null, 'property2', '    ', undefined]