diff --git a/api/v1/serializers/course.py b/api/v1/serializers/course.py
index a81c7ba9..23c29fc7 100644
--- a/api/v1/serializers/course.py
+++ b/api/v1/serializers/course.py
@@ -366,6 +366,7 @@ class LessonCreateSerializer(serializers.ModelSerializer):
                     g = Gallery.objects.get(id=c['data']['id'])
                     g.position = c['data']['position']
                     g.title = c['data']['title']
+                    g.lesson = lesson
                     g.save()
                     if 'images' in c['data']:
                         for image in c['data']['images']:
@@ -375,6 +376,7 @@ class LessonCreateSerializer(serializers.ModelSerializer):
                             )
                 else:
                     g = Gallery.objects.create(
+                        lesson=lesson,
                         position=c['data']['position'],
                         title=c['data']['title'],
                     )