diff --git a/sage_validation/file_validator/forms.py b/sage_validation/file_validator/forms.py
index a8c43eabc3b91671d805b6c97d6d571d8cd7f2c6..84b5ec86a4e89b4ccb76c9a59d4e5b563ee0062f 100644
--- a/sage_validation/file_validator/forms.py
+++ b/sage_validation/file_validator/forms.py
@@ -67,7 +67,7 @@ class CSVUploadForm(forms.Form):
 
         # Step 2: Parse file and validate headers
         csv_file = file.read().decode("utf-8").splitlines()
-        reader = csv.DictReader(csv_file, delimiter=";")
+        reader = csv.DictReader(csv_file, delimiter=",")
         fieldnames = reader.fieldnames if reader.fieldnames is not None else []
         self._validate_headers(fieldnames)