diff --git a/lib/update_database.py b/lib/update_database.py
index 893af4c..c9a5bc9 100644
--- a/lib/update_database.py
+++ b/lib/update_database.py
@@ -12,16 +12,16 @@ Dieses Programm:
 
 def get_rd_dbase(out_dir):
 
-    rd_csv_source_dir = os.environ.get('RD_DATABASE_SOURCE')
-    rd_csv_filename = os.environ.get('RD_DATABASE_NAME')
-    csv_source_filepath = os.path.join(rd_csv_source_dir, rd_csv_filename)
+    rd_csv_source_dir = os.environ.get("RD_DATABASE_SOURCE")
+    rd_csv_filename = os.environ.get("RD_DATABASE_NAME")
+    csv_source_path = os.path.join(rd_csv_source_dir, rd_csv_filename)
 
-    if os.path.isfile(csv_source_filepath):
-        csv_out_filepath = os.path.join(out_dir, rd_csv_filename)
+    if os.path.isfile(csv_source_path):
+        csv_destiny_path = os.path.join(out_dir, rd_csv_filename)
 
         if os.path.isdir(out_dir):
             print("Copying CSV-file of RuleDesigner database...")
-            shutil.copyfile(rd_csv_source_dir, csv_out_filepath)
+            shutil.copyfile(csv_source_path, csv_destiny_path)
             print("done")
         else:
             print(f"Can't copy RuleDesigner-database, because output directory ${out_dir} doesn't exist. Check path of %CREMIG_DATA% in cremig_setenv.bat")
@@ -51,7 +51,7 @@ def get_sivas_dbase(sivas_id, out_dir):
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='fetches data from sivas or ruledesigner fusion', prog='update_database')
-    parser.add_argument('-s', '--sivas', action='store', help='fetch data of this id from sivas fo local database folder')
+    parser.add_argument('-s', '--sivas', action='store', help='fetch data of this id from sivas fo local database folder', metavar='id')
     parser.add_argument('-r', '--rd', action='store_true', help='fetch list of existing parts from network drive')
 
     args = parser.parse_args()
@@ -65,4 +65,4 @@ if __name__ == '__main__':
         get_sivas_dbase(args.sivas, out_dir)
 
     else:
-        print("ERROR - Missing flags!")
+        parser.print_help()