diff --git a/Readme.md b/Readme.md
index 795d55f..da26026 100644
--- a/Readme.md
+++ b/Readme.md
@@ -7,7 +7,7 @@
 [![License](https://img.shields.io/github/license/drwetter/testssl.sh)](https://github.com/drwetter/testssl.sh/LICENSE)
 [![Docker](https://img.shields.io/docker/pulls/drwetter/testssl.sh)](https://github.com/drwetter/testssl.sh/blob/3.2/Dockerfile.md)
 
-`testssl.sh` is a free command line tool which checks a server its service on
+`testssl.sh` is a free command line tool which checks a server's service on
 any port for the support of TLS/SSL ciphers, protocols as well as some
 cryptographic flaws.