diff --git a/README.md b/README.md
index bf1a38b..b63389f 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,8 @@ domains:
 check_interval: 0 0 0/6 * * * *
 ```
 
+The config file is expected to be in the same directory as the binary and called `config.yaml`. For the OCR image, the root directory is `/app`.
+
 ## DNS Providers
 The DNS provider abstracts the API of your DNS provider. Currently the following providers are supported: