diff --git a/README.md b/README.md
index f59c3e7..0dcddd5 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,6 @@ The texts are available on two formats:
 that contain all available annotation. They contain the complete morphological,
 syntactic and information-structure annotation, as well as the complete text,
 including punctuation, section headers etc. The schema is defined in
-`proiel.xsd`.
+[`proiel.xsd`](https://github.com/proiel/proiel-treebank/blob/master/proiel.xsd).
 
 2. [CoNLL-X format](http://nextens.uvt.nl/depparse-wiki/DataFormat)