diff --git a/auto_archive.py b/auto_archive.py
index b800c3e..484b56f 100644
--- a/auto_archive.py
+++ b/auto_archive.py
@@ -153,7 +153,7 @@ def main():
         parser.add_argument(f'--col-{k}', action='store', dest=k, default=v, help=f'the name of the column to fill with {k} (defaults={v})')
 
     args = parser.parse_args()
-    config_columns = {k: getattr(args, k) for k in GWorksheet.COLUMN_NAMES.keys()}
+    config_columns = {k: getattr(args, k).lower() for k in GWorksheet.COLUMN_NAMES.keys()}
 
     logger.info(f'Opening document {args.sheet} for header {args.header}')
 
diff --git a/utils/gworksheet.py b/utils/gworksheet.py
index 7e0c82a..355f074 100644
--- a/utils/gworksheet.py
+++ b/utils/gworksheet.py
@@ -19,7 +19,7 @@ class GWorksheet:
     def __init__(self, worksheet, columns=COLUMN_NAMES, header_row=1):
         self.wks = worksheet
         self.values = self.wks.get_values()[header_row - 1:]
-        self.headers = [v for v in self.values[0]]
+        self.headers = [v.lower() for v in self.values[0]]
         self.row_offset = header_row - 1
         self.columns = columns