diff --git a/atlas/models.py b/atlas/models.py
index 7d971225..688e4983 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -390,6 +390,7 @@ def extract_image_dicom_json_from_ds(ds, url, image_index):
 
     if d == {}:
         d["SOPInstanceUID"] = f"1.2.840.1111.{image_index}"
+        d["SeriesInstanceUID"] = f"1.2.840.1112.1"
 
     return {"metadata": d, "url": f"dicomweb:{url}"}