diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index dc1f385d38af6dc4dca53c5a90c0816f619924b5..bf822c80d65ee210924dbd9968331131ff075a60 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -26,6 +26,7 @@ Fixed
 * Optimize exam model and add reference to exams at extra lessons.
 * Lessons weren't shown as cancelled on teacher or room timetables
   if events had replaced them.
+* The URLs containing the term "substitution" were missspelled.
 
 `2.3`_ - 2022-03-21
 -------------------
diff --git a/aleksis/apps/chronos/urls.py b/aleksis/apps/chronos/urls.py
index 641bf2239d44a1069d2a7a4a209995421d889a71..411e5cd8284a32990e46f7d6cf70548cc2c26811 100644
--- a/aleksis/apps/chronos/urls.py
+++ b/aleksis/apps/chronos/urls.py
@@ -34,12 +34,12 @@ urlpatterns = [
         name="lessons_day_by_date",
     ),
     path(
-        "lessons/<int:id_>/<int:week>/substition/",
+        "lessons/<int:id_>/<int:week>/substitution/",
         views.edit_substitution,
         name="edit_substitution",
     ),
     path(
-        "lessons/<int:id_>/<int:week>/substition/delete/",
+        "lessons/<int:id_>/<int:week>/substitution/delete/",
         views.delete_substitution,
         name="delete_substitution",
     ),