diff --git a/README.md b/README.md
index f604bd0..d24a1d0 100644
--- a/README.md
+++ b/README.md
@@ -41,8 +41,7 @@ The input data for `strecken.pmtiles` consists of a `data/` folder,
 with one subfolder for each layer. In each of these folders, the lines
 to be displayed on the map can be deposited in any format understood
 by [ogrmerge](https://gdal.org/programs/ogrmerge.html), for instance,
-GeoJSON or gpx. The input data can be obtained from OpenStreetMap
-using tools such as [brouter][brouter] or [osmexp][osmexp].
+GeoJSON or gpx. 
 
 #### layers.json
 
@@ -97,7 +96,3 @@ jq 'del( .features[] .properties )'
 ```
 
 on the input file with excessive metadata. 
-
-
-[brouter]: https://brouter.de/brouter-web/
-[osmexp]: https://github.com/homologic/osmexp
diff --git a/scripts/umap-extractor.py b/scripts/umap-extractor.py
index 6e0bfb5..8fbef1a 100755
--- a/scripts/umap-extractor.py
+++ b/scripts/umap-extractor.py
@@ -4,15 +4,11 @@ import re
 import requests
 import json
 import os
-import argparse
+import sys
 
-parser = argparse.ArgumentParser(description='Export Umap maps for use with streckenkarte')
-parser.add_argument("URL", help="The map's URL")
-parser.add_argument("output_dir", help="Output directory")
 
-args = parser.parse_args()
-url = args.URL
-outdir = args.output_dir
+url = sys.argv[1]
+outdir = sys.argv[2]
 
 base = url.split("/map/")[0]
 r = requests.get(url)