diff --git a/doc/source/modules.rst b/doc/source/modules.rst
index 756cae7c..2a5b001f 100644
--- a/doc/source/modules.rst
+++ b/doc/source/modules.rst
@@ -146,7 +146,7 @@ Docker
 
 
 Environment
-~~~~~~
+~~~~~~~~~~~
 
 .. autoclass:: testinfra.modules.environment.Environment(name)
    :members: