diff --git a/docs/CONTRIBUTING.rst b/docs/CONTRIBUTING.rst
index d0e8fbab..4b10542c 100644
--- a/docs/CONTRIBUTING.rst
+++ b/docs/CONTRIBUTING.rst
@@ -91,7 +91,7 @@ it in `module_build_service/config.py`, `app.config.from_object()`.
 Environment
 -----------
 
-The environment variable `MODULE_BUILD_SERVICE_DEVELOPER_ENV`, which if set to "1", indicates to the Module Build Service that the development configuration should be used. Docker and Vagrant are being run with this environment variable set. 
+The environment variable `MODULE_BUILD_SERVICE_DEVELOPER_ENV`, which if set to "1", indicates to the Module Build Service that the development configuration should be used. Docker and Vagrant are being run with this environment variable set.
 
 Anytime, you can do::