diff --git a/atlas/models.py b/atlas/models.py
index 9ee1961f..566436e3 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -896,7 +896,7 @@ class UncategorisedDicom(models.Model):
 
     created_date = models.DateTimeField(default=timezone.now)
 
-    basic_dicom_tags = models.JSONField(null=True)
+    basic_dicom_tags = models.JSONField(null=True, blank=True)
 
     def check_for_duplicates(self, image_hash):
         duplicate = None