diff --git a/personal_data/util.py b/personal_data/util.py
index 69aa53c..b054aa6 100644
--- a/personal_data/util.py
+++ b/personal_data/util.py
@@ -148,7 +148,9 @@ def normalize_dict(d: dict[str,typing.Any]) -> frozendict[str,typing.Any]:
 def load_csv_file(csv_file: Path) -> list[frozendict]:
     dicts: list[frozendict] = []
     with open(csv_file) as csvfile:
-        reader = csv.DictReader(csvfile, dialect=CSV_DIALECT)
+        dialect = csv.Sniffer().sniff(csvfile.read(1024))
+        csvfile.seek(0)
+        reader = csv.DictReader(csvfile, dialect=dialect)
         for row in reader:
             for k in list(row.keys()):
                 orig = row[k]