diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fe57e3c3c6..a77bfaceab 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -32,7 +32,7 @@ $ make test
 ```
 
 This will usually take around two minutes as it's compiling the entire
-[test262](https://github.com/tc39/test262) test suite and validating it's AST.
+[test262](https://github.com/tc39/test262) test suite and validating its AST.
 This is mostly overkill and you can limit the tests to a select few by directly
 running them with `mocha`: