diff --git a/documentation/README b/documentation/README
index c888b666a8..8ac8d52367 100644
--- a/documentation/README
+++ b/documentation/README
@@ -142,6 +142,14 @@ To run Vale:
 
  $ make stylecheck
 
+Style checking the whole documentation might take some time and generate a
+lot of warnings/errors, thus one can run Vale on a subset of files or
+directories:
+
+  $ make stylecheck VALEDOCS=<file>
+  $ make stylecheck VALEDOCS="<file1> <file2>"
+  $ make stylecheck VALEDOCS=<dir>
+
 Link checking the Yocto Project documentation
 =============================================