diff --git a/nixos/modules/services/networking/pihole-ftl.md b/nixos/modules/services/networking/pihole-ftl.md
index 4a1b1f986708..0f79fd6101c4 100644
--- a/nixos/modules/services/networking/pihole-ftl.md
+++ b/nixos/modules/services/networking/pihole-ftl.md
@@ -22,6 +22,7 @@ Example configuration:
 {
   services.pihole-ftl = {
     enable = true;
+    openFirewallDNS = true;
     openFirewallDHCP = true;
     queryLogDeleter.enable = true;
     lists = [