diff --git a/run_without_oversampling.py b/run_without_oversampling.py
index bda899ca586093c2456488c94bc54b6784d9ac6c..7b0826beea2dd11d5d9498ccf4c7240ae467bd12 100644
--- a/run_without_oversampling.py
+++ b/run_without_oversampling.py
@@ -12,11 +12,9 @@ import os
 def load_stations(external_station_list = None):
     import json
     if external_station_list is None:
-        filename = 'supplement/station_list_north_german_plain_rural.json'
-    else:
-        filename = external_station_list
+        external_station_list = 'supplement/station_list_north_german_plain_rural.json'
     try:
-        filename = 'supplement/station_list_north_german_plain_rural.json'
+        filename = external_station_list
         with open(filename, 'r') as jfile:
             stations = json.load(jfile)
     except FileNotFoundError: