diff --git a/setup_files b/setup_files
index f3684aa..25e9fbc 100755
--- a/setup_files
+++ b/setup_files
@@ -18,12 +18,19 @@ import subprocess
 def parse_arguments():
     parser = argparse.ArgumentParser(description='Merges given input images '
                                                  'into one multipage tiff.')
-    parser.add_argument('-i', dest='input_dir', required=True,
+    parser.add_argument('-i',
+                        dest='input_dir',
+                        required=True,
                         type=os.path.abspath)
-    parser.add_argument('-o', dest='output_dir', required=True,
+    parser.add_argument('-o',
+                        dest='output_dir',
+                        required=True,
                         type=os.path.abspath)
-    parser.add_argument('--zip', action='store_true', default=False,
-                        dest='zip', help='package result files in zip bundles',
+    parser.add_argument('--zip',
+                        default='combines-pictures',
+                        dest='zip',
+                        type=str,
+                        help='package result files in zip bundles',
                         required=False)
     return parser.parse_args()
 
@@ -40,7 +47,7 @@ def merge_images(input_dir, output_dir, zip):
     cmd = 'rm {i}/file_list.txt'.format(i=input_dir)
     subprocess.run(cmd, shell=True)
     if zip:
-        cmd = 'cd {o} && zip -m combined.zip combined.tif && cd -'.format(o=output_dir)
+        cmd = 'cd {o} && zip -m {f}-combined.zip combined.tif && cd -'.format(o=output_dir, f=zip)
         subprocess.run(cmd, shell=True)