diff --git a/api/advent22_api/routers/days.py b/api/advent22_api/routers/days.py
index 4fb8018..fa97652 100644
--- a/api/advent22_api/routers/days.py
+++ b/api/advent22_api/routers/days.py
@@ -194,5 +194,5 @@ async def get_picture_for_day(
 
     return StreamingResponse(
         content=img_buffer,
-        media_type="image/jpg",
+        media_type="image/jpeg",
     )