diff --git a/doc/source/aha_region_de.md b/doc/source/aha_region_de.md
index 3b470be0..a43d8c8b 100644
--- a/doc/source/aha_region_de.md
+++ b/doc/source/aha_region_de.md
@@ -46,4 +46,4 @@ waste_collection_schedule:
 
 ## How to get the source argument
 
-Find the parameter of your address using [https://www.aha-region.de/abholtermine/abfuhrkalen](https://www.aha-region.de/abholtermine/abfuhrkalen) and write them exactly like on the web page.
+Find the parameter of your address using [https://www.aha-region.de/abholtermine/abfuhrkalender](https://www.aha-region.de/abholtermine/abfuhrkalender) and write them exactly like on the web page.