diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d993dd7d..3677a2cf 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -27,4 +27,7 @@ commits](http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.h
 too. This is used to "clean" your Pull Request before merging it (we don't want
 commits such as `fix tests`, `fix 2`, `fix 3`, etc.).
 
+Also, while creating your Pull Request on GitHub, you MUST write a description
+which gives the context and/or explains why you are creating it.
+
 Thank you!