diff --git a/generate.py b/generate.py
index f43e086..2c79c82 100755
--- a/generate.py
+++ b/generate.py
@@ -100,7 +100,7 @@ def main():
 
         # Add header
         print('create header file', file=sys.stderr)
-        create_header(args.headerfile, experiment, experiment_dir)
+        create_header(args.header, experiment, experiment_dir)
 
         # Add makefile & c++ file
         print('add Makefile', file=sys.stderr)