diff --git a/aleksis/apps/alsijil/models.py b/aleksis/apps/alsijil/models.py
index 69e1100caafca57fe202293bcb90d00cec30ca1b..faa54c7e54a971d8c8bab459dc4e2c76ea30ab58 100644
--- a/aleksis/apps/alsijil/models.py
+++ b/aleksis/apps/alsijil/models.py
@@ -101,6 +101,13 @@ class Documentation(CalendarEvent):
     )
 
     def get_subject(self) -> str:
+        """get_subject is deprecated
+        Use doc.subject, .course & .teachers directly instead.
+
+        The amends logic is done onetime for each documentation in the
+        create_from_lesson_event method.
+        """
+
         if self.subject:
             return self.subject
         if self.amends: