diff --git a/tagger.py b/tagger.py
index 015bbcb..5848d5d 100644
--- a/tagger.py
+++ b/tagger.py
@@ -8,6 +8,7 @@ from pathlib import Path
 from exclude import EXCLUDED_WORDS
 
 SOURCE_DIR = Path('data')
+SOURCE_FILENAME = 'index.txt'
 OUTPUT_FILE = 'tags.json'
 TAGS_PER_ARTICLE = 5
 JSON_INDENT = 2
@@ -126,7 +127,8 @@ def read_file(file: Path) -> str:
 
 def main():
     final_tags = {}
-    for file in SOURCE_DIR.glob('**/index.txt'):  # Nach allen index.txt Dateien suchen
+    # Nach allen Quelldateien suchen
+    for file in SOURCE_DIR.glob(f'**/{SOURCE_FILENAME}'):
         # Die Dateien, deren Ordner mit 'autosave-' beginnen, ignorieren.
         title = file.parent.name
         if title.startswith('autosave-'):