diff --git a/assets/images/attribution.txt b/assets/images/attribution.txt
index 8aa81de..e28ba10 100644
--- a/assets/images/attribution.txt
+++ b/assets/images/attribution.txt
@@ -21,4 +21,4 @@ Title: Basteibrücke morgens
 Copyright holder: Thomas Wolf
  -> Website: www.foto-tw.de
 Upload URL: https://commons.wikimedia.org/wiki/File:Basteibr%C3%BCcke_morgens.jpg
-License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/legalcode
+License: CC BY-SA 3.0-DE (https://creativecommons.org/licenses/by-sa/3.0/de/legalcode