diff --git a/doc/source/abfall_io.md b/doc/source/abfall_io.md
index 0068454a..c0b5de18 100644
--- a/doc/source/abfall_io.md
+++ b/doc/source/abfall_io.md
@@ -60,7 +60,7 @@ There is a script with an interactive command line interface which generates the
 
 [https://github.com/mampfes/hacs_waste_collection_schedule/blob/master/custom_components/waste_collection_schedule/waste_collection_schedule/wizard/abfall_io.py](https://github.com/mampfes/hacs_waste_collection_schedule/blob/master/custom_components/waste_collection_schedule/waste_collection_schedule/wizard/abfall_io.py).
 
-Just run this script from a shell and answer the questions.
+Install the Python-Module "inquirer" and run this script from a shell and answer the questions.
 
 ### Hardcore Variant: Extract arguments from website