diff --git a/suricata.yaml.in b/suricata.yaml.in
index 757e4169d6..9a23c10821 100644
--- a/suricata.yaml.in
+++ b/suricata.yaml.in
@@ -297,6 +297,7 @@ outputs:
       #certs-log-dir: certs # directory to store the certificates files
 
   # a line based log of DNS requests and/or replies (no alerts)
+  # Note: not available when Rust is enabled (--enable-rust).
   - dns-log:
       enabled: no
       filename: dns.log