diff --git a/README.md b/README.md
index 1cdab9f..112b52f 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,6 @@ through your web server with php interpreter, give it a `composer
 install`, `mkdir db` with write permission for your web server
 user/group and direct your browser to the former script.
 
-For testing and debugging purposer, you can just use:
+For testing and debugging purposes, you can just use:
 
     $ php -S localhost:8000 index.php