diff --git a/httplug/library-developers.rst b/httplug/library-developers.rst
index 654406a..04f1c11 100644
--- a/httplug/library-developers.rst
+++ b/httplug/library-developers.rst
@@ -38,8 +38,8 @@ to include the Socket client:
         }
     }
 
-Testing you library
--------------------
+Testing your library
+--------------------
 
 When you install your library on a CI-server (like Travis) you need to include a client. So specify any concrete client
 in the ``require-dev`` section in your library’s ``composer.json``. You could use any client but the