diff --git a/README.md b/README.md
index f25c970..c8df481 100644
--- a/README.md
+++ b/README.md
@@ -53,5 +53,8 @@ services:
     image: git.pfy.ch/pfych/chapter-tracker:latest
     volumes:
       - "./config.json:/checker/config.json"
-      - "./mangaHistory.json:/checker/mangaHistory.json" # Required for keeping track of what's been sent
+      - "./mangaHistory.json:/checker/mangaHistory.json" 
 ```
+
+Ensure that `config.json` and `mangaHistory.json` exist & are valid json files before running the container.
+