diff --git a/doc/development/structure.rst b/doc/development/structure.rst
index 20eef4bc44..ec69418a90 100644
--- a/doc/development/structure.rst
+++ b/doc/development/structure.rst
@@ -41,6 +41,6 @@ pretix/
 
 tests/
     This is the root directory for all test codes. It includes subdirectories ``api``, ``base``,
-    ``control``, ``presale``, ``helpers`, ``multidomain`` and ``plugins`` to mirror the structure
+    ``control``, ``presale``, ``helpers``, ``multidomain`` and ``plugins`` to mirror the structure
     of the pretix source code as well as ``testdummy``, which is a pretix plugin used during
     testing.