diff --git a/docs/ref/configuration.md b/docs/ref/configuration.md
index e11710db..18c8502f 100644
--- a/docs/ref/configuration.md
+++ b/docs/ref/configuration.md
@@ -5,7 +5,9 @@
     - `/etc/headscale`
     - `$HOME/.headscale`
     - the current working directory
-- Use the command line flag `-c`, `--config` to load the configuration from a different path
+- To load the configuration from a different path, use:
+    - the command line flag `-c`, `--config`
+    - the environment variable `HEADSCALE_CONFIG`
 - Validate the configuration file with: `headscale configtest`
 
 !!! example "Get the [example configuration from the GitHub repository](https://github.com/juanfont/headscale/blob/main/config-example.yaml)"