diff --git a/config-example.yaml b/config-example.yaml
index dc4bd57..692c605 100644
--- a/config-example.yaml
+++ b/config-example.yaml
@@ -6,6 +6,10 @@ server_url: http://127.0.0.1:8080
 # Address to listen to / bind to on the server
 listen_addr: 0.0.0.0:8080
 
+# Private key file which will be
+# autogenerated if it's missing
+private_key_path: private.key
+
 derp:
   # List of externally available DERP maps encoded in JSON
   urls:
diff --git a/docs/Configuration.md b/docs/Configuration.md
index f5e8c3f..55ab56e 100644
--- a/docs/Configuration.md
+++ b/docs/Configuration.md
@@ -28,7 +28,7 @@ derp_map_path: derp.yaml
 `derp_map_path` is the path to the [DERP](https://pkg.go.dev/tailscale.com/derp) map file. If the path is relative, it will be interpreted as relative to the directory the configuration file was read from.
 
 ```yaml
-ephemeral_node_inactivity_timeout": "30m"
+ephemeral_node_inactivity_timeout: "30m"
 ```
 
 `ephemeral_node_inactivity_timeout` is the timeout after which inactive ephemeral node records will be deleted from the database. The default is 30 minutes. This value must be higher than 65 seconds (the keepalive timeout for the HTTP long poll is 60 seconds, plus a few seconds to avoid race conditions).