diff --git a/generic/management/commands/checkdicoms.py b/generic/management/commands/checkdicoms.py
index 648fe950..ce438d02 100644
--- a/generic/management/commands/checkdicoms.py
+++ b/generic/management/commands/checkdicoms.py
@@ -37,7 +37,7 @@ class Command(BaseCommand):
             for code in site_codes:
                 # TODO rewrite
                 try:
-                    for s in (ds.PatientsID, ds.AccessionNumber):
+                    for s in (ds.PatientID, ds.AccessionNumber):
                         if code in s:
                             self.stdout.write(self.style.WARNING(f"Identifiable dicom {file}"))
                 except AttributeError: