diff --git a/README.md b/README.md
index eb606ab..5260a3b 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ## uMatrix<br>[<img src="https://travis-ci.org/gorhill/uMatrix.svg?branch=master" height="16">](https://travis-ci.org/gorhill/uMatrix)
 
-Defintiely for advanced users.
+Definitely for advanced users.
 
 Forked and refactored from [HTTP Switchboard](https://github.com/gorhill/httpswitchboard).