diff --git a/README.md b/README.md
index 0b2f8b6..0917fa7 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ reference for both old and new users but also to provide a set of exercices for
 those who teach.
 
 → [Test them on Binder](http://mybinder.org:/repo/rougier/numpy-100/notebooks/100%20Numpy%20exercises.ipynb)  
-→ [Read them on GitHub](100 Numpy exercises.md)  
+→ [Read them on GitHub](100%20Numpy%20exercises.md)  
 
 This work is licensed under a MIT license.  
 [![DOI](https://zenodo.org/badge/10173/rougier/numpy-100.svg)](https://zenodo.org/badge/latestdoi/10173/rougier/numpy-100)