diff --git a/src/c3nav/mapdata/models/geometry/base.py b/src/c3nav/mapdata/models/geometry/base.py
index 5a046bf0..55fd7d0e 100644
--- a/src/c3nav/mapdata/models/geometry/base.py
+++ b/src/c3nav/mapdata/models/geometry/base.py
@@ -38,7 +38,7 @@ class GeometryMixin(SerializableMixin):
     @classmethod
     @contextmanager
     def dont_keep_originals(cls):
-        # to do: invert this and to no_orig being True by default
+        # todo: invert this and to no_orig being True by default
         cls.no_orig = True
         yield
         cls.no_orig = False