diff --git a/dnscrypt-proxy/example-dnscrypt-proxy.toml b/dnscrypt-proxy/example-dnscrypt-proxy.toml
index edb808fc..ceb93086 100644
--- a/dnscrypt-proxy/example-dnscrypt-proxy.toml
+++ b/dnscrypt-proxy/example-dnscrypt-proxy.toml
@@ -44,6 +44,7 @@ max_clients = 250
 ## Switch to a different system user after listening sockets have been created.
 ## Note (1): this feature is currently unsupported on Windows.
 ## Note (2): this feature is not compatible with systemd socket activation.
+## Note (3): when using -pidfile, the PID file directory must be writable by the new user
 
 # user_name = 'nobody'