--- a/readme.rst	Fri Sep 22 10:13:17 2017 +0300
+++ b/readme.rst	Fri Sep 22 14:33:51 2017 +0300
@@ -33,8 +33,8 @@
     positional arguments:
       parameter_file        The path to a parameter file linking licel and SCC
                             channels.
-      directory             Directory containing licel files (default '.')
-      search_string         Search string for files in directory (default '*.*')
+      files                 Location of licel files. Use relative path and
+                            filename wildcards. (default './*.*')
 
     optional arguments:
       -h, --help            show this help message and exit