diff --git a/files/classes/media.py b/files/classes/media.py
index 0c0366c23..bf67486ce 100644
--- a/files/classes/media.py
+++ b/files/classes/media.py
@@ -27,10 +27,9 @@ class Media(Base):
 
 class MediaUsage(Base):
 	__tablename__ = "media_usages"
-	id = Column(Integer, primary_key=True)
-	filename = Column(String, ForeignKey("media.filename"))
-	post_id = Column(Integer, ForeignKey("posts.id"))
-	comment_id = Column(Integer, ForeignKey("comments.id"))
+	filename = Column(String, ForeignKey("media.filename"), primary_key=True)
+	post_id = Column(Integer, ForeignKey("posts.id"), primary_key=True)
+	comment_id = Column(Integer, ForeignKey("comments.id"), primary_key=True)
 	created_utc = Column(Integer)
 	deleted_utc = Column(Integer)
 	removed_utc = Column(Integer)
diff --git a/migrations/20241022-cleanup-videos.sql b/migrations/20241022-cleanup-videos.sql
index 1221cfd97..d22ddb060 100644
--- a/migrations/20241022-cleanup-videos.sql
+++ b/migrations/20241022-cleanup-videos.sql
@@ -16,6 +16,9 @@ CREATE SEQUENCE public.media_usages_id_seq
     NO MAXVALUE
     CACHE 1;
 
+ALTER TABLE ONLY public.media_usages
+    ADD CONSTRAINT group_media_usages_pkey PRIMARY KEY (filename, post_id, comment_id);
+
 ALTER SEQUENCE public.media_usages_id_seq OWNED BY public.media_usages.id;
 
 ALTER TABLE ONLY public.media_usages ALTER COLUMN id SET DEFAULT nextval('public.media_usages_id_seq'::regclass);