diff --git a/atlas/api.py b/atlas/api.py
index 6a10373b..77e4e693 100644
--- a/atlas/api.py
+++ b/atlas/api.py
@@ -599,7 +599,7 @@ def check_images_hashes(request, hashes: List[str]):
         series_images = (
             SeriesImage.objects.filter(image_blake3_hash__in=hashes)
             .select_related("series")
-            .only("pk", "image_blake3_hash", "series__slug", "series__pk")
+            .only("pk", "image_blake3_hash", "series__slug", "series__id")
         )
         matched_hashes: set = set()
         for si in series_images: