diff --git a/doc/en/assert.rst b/doc/en/assert.rst
index 60edbf2a3..d3deeb503 100644
--- a/doc/en/assert.rst
+++ b/doc/en/assert.rst
@@ -267,7 +267,7 @@ information into the assertion failure message.  ``pytest`` only rewrites test
 modules directly discovered by its test collection process, so **asserts in
 supporting modules which are not themselves test modules will not be rewritten**.
 
-You can manually enable assertion rewriting for an imported module by calling 
+You can manually enable assertion rewriting for an imported module by calling
 `register_assert_rewrite <https://docs.pytest.org/en/latest/writing_plugins.html#assertion-rewriting>`_
 before you import it (a good place to do that is in ``conftest.py``).