diff --git a/README.md b/README.md
index ffbc561..e2978eb 100644
--- a/README.md
+++ b/README.md
@@ -141,7 +141,7 @@ ckan
 
 ## pdb
 
-Add these lines to the Dockerfile.dev
+Add these lines to the ckan-dev service in the docker-compose.dev.yml
 
 ![pdb](https://user-images.githubusercontent.com/54408245/179964232-9e98a451-5fe9-4842-ba9b-751bcc627730.png)