diff --git a/configuration.nix b/configuration.nix
index e4e0fc66..ec7b2b94 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -54,7 +54,7 @@
       enable = true;
       allowedTCPPorts = [  ];
       allowedUDPPorts = [  ];
-      trustedInterfaces = "tailscale0";
+      trustedInterfaces = [ "tailscale0" ];
     };
   };