diff --git a/supplements.py b/supplements.py
index 155606c482fb194af1270a613c06c0684d2d5cd7..e84e9d1cbc5e0bc439da7fff784e934c7505ad5a 100755
--- a/supplements.py
+++ b/supplements.py
@@ -88,7 +88,7 @@ def main(args):
                         help="PDF folder with scanned PDFs. Default: ./pdfs")
     parser.add_argument("-o", "--outfolder", default="./supplements_out",
                         help="Output folder. Default: ./supplements_out")
-    parser.add_argument("-d", "--dry", action='store_false',
+    parser.add_argument("-d", "--dry", action='store_true',
                         help="Flag for dry run")
 
     args = parser.parse_args(args)