diff --git a/.gitignore b/.gitignore
index 7fcf867..35e4ad0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,7 @@ nosetests.xml
 .mr.developer.cfg
 .project
 .pydevproject
+
+# VSCode
+.vscode
+.devcontainer
diff --git a/genesisclient/__init__.py b/genesisclient/__init__.py
index f8a80b6..1be34b2 100644
--- a/genesisclient/__init__.py
+++ b/genesisclient/__init__.py
@@ -538,8 +538,8 @@ def main():
     import sys
     import argparse
     parser = argparse.ArgumentParser(description='These are todays options:')
-    parser.add_argument('-s', dest='site', default=None,
-                   help='Genesis site to connect to (DESTATIS or LDNRW)')
+    parser.add_argument('-s', dest='site', default=None, required=True, choices=['DESTATIS', 'LDNRW', 'REGIONAL', 'BAYERN'],
+                   help='Genesis site to connect to (possible options are DESTATIS, LDNRW, REGIONAL or BAYERN)')
     parser.add_argument('-u', dest='username', default='',
                    help='username for Genesis login')
     parser.add_argument('-p', dest='password', default='',
diff --git a/setup.py b/setup.py
index daf1881..474985f 100644
--- a/setup.py
+++ b/setup.py
@@ -17,5 +17,6 @@
         'console_scripts': [
             'genesiscl = genesisclient:main'
         ]
-      }
+      },
+      setup_requires=['wheel']
 )