diff --git a/docs/developer-guide/api/utils.md b/docs/developer-guide/api/utils.md
index fd70aaf1..4245f4a3 100644
--- a/docs/developer-guide/api/utils.md
+++ b/docs/developer-guide/api/utils.md
@@ -11,6 +11,7 @@ Check if a string is a absolute URL.
 
 ```js
 utils.isAbsoluteURL('http://example.com'); // true
+utils.isAbsoluteURL('file.less'); // false
 ```
 
 ## `isVariable()`
@@ -18,17 +19,18 @@ Check if a value is a Less variable.
 
 ```js
 utils.isVariable('@foo'); // true
+utils.isVariable('blue'); // false
 ```
 
 ## `parseSelector`
-Parse a selector using `postcss-selector-parser`.
+Parse a selector using [`postcss-selector-parser`](https://github.com/postcss/postcss-selector-parser).
 
 ```js
 utils.parseSelector('.foo'); // Parser tree
 ```
 
 ## `parseValue`
-Parse a value using `postcss-values-parser`.
+Parse a value using [`postcss-values-parser`](https://github.com/lesshint/postcss-values-parser).
 
 ```js
 utils.parseValue('10px'); // Parser tree