diff --git a/index.mdwn b/index.mdwn
index dd8831e..ae8cc0e 100644
--- a/index.mdwn
+++ b/index.mdwn
@@ -11,7 +11,7 @@ Anyone can contribute. To add your suggestions:
 [[!toc startlevel=2 levels=2]]
 
 ## Math related
-- Ensure that some paper sheets are available (e.g. put a ream of A4 paper available in the library)
+- Ensure that some paper sheets are available (e.g. put a ream of A4 paper available in the library).
 - Explain how we can print (if it's possible).
 - Write an explicit procedure for people who want to donate books to the library.