diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 40439fe..5a13548 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,5 +14,5 @@ Thanks for your interest in contributing to Go by Example!
   first_.
 
 * We're not going to change the navigation of the site, in particular adding
-  a "previous section" link or an "index" link other than the on the title
+  a "previous section" link or an "index" link other than the one on the title
   text.