diff --git a/doc/api/util.markdown b/doc/api/util.markdown
index 9914deb48050db..8ac0e0ef8467d9 100644
--- a/doc/api/util.markdown
+++ b/doc/api/util.markdown
@@ -404,6 +404,8 @@ Returns `true` if the given "object" is a primitive type. `false` otherwise.
 
     Stability: 0 - Deprecated
 
+Use `Buffer.isBuffer()` instead.
+
 Returns `true` if the given "object" is a `Buffer`. `false` otherwise.
 
     var util = require('util');