diff --git a/README.md b/README.md
index 5e6d5157..771450c0 100644
--- a/README.md
+++ b/README.md
@@ -257,7 +257,7 @@ system properties can be used to force a different config source
    it should include the extension, not be a basename
  - `config.url` specifies a URL
 
- **Note**: you need to pass `-Dconfig.file=path/to/config-file` before the jar itself, e.g. `java -Dconfig.file=path/to/config-file.conf -jar path/to/jar-file.jar`
+ **Note**: you need to pass `-Dconfig.file=path/to/config-file` before the jar itself, e.g. `java -Dconfig.file=path/to/config-file.conf -jar path/to/jar-file.jar`. Same applies for `-Dconfig.resource=config-file.conf`
 
 These system properties specify a _replacement_ for
 `application.{conf,json,properties}`, not an addition. They only