diff --git a/modules/networking/technitium-dns-server.nix b/modules/networking/technitium-dns-server.nix
index 6f8bacc..4f0c040 100644
--- a/modules/networking/technitium-dns-server.nix
+++ b/modules/networking/technitium-dns-server.nix
@@ -22,6 +22,10 @@ in
   };
 
   config = lib.mkIf cfg.enable {
+
+    # Disable internal DNS otherwise TCP .:53 is already in use. Breaks zone sync
+    services.resolved.enable = false;
+
     services.technitium-dns-server = {
       enable = true;
       openFirewall = true;
@@ -29,7 +33,8 @@ in
         53
         5380
         53443
-      ] ++ lib.optional cfg.dnsOverHttps 443;
+      ]
+      ++ lib.optional cfg.dnsOverHttps 443;
       firewallUDPPorts = [
         53
         67