diff --git a/hosts/physique/hyponix/services/wireguard.nix b/hosts/physique/hyponix/services/wireguard.nix
index c8c412b..01c954d 100644
--- a/hosts/physique/hyponix/services/wireguard.nix
+++ b/hosts/physique/hyponix/services/wireguard.nix
@@ -27,7 +27,7 @@ in
               "fd00::1/128"
               "10.100.0.1/32"
             ];
-            endpoint = "pixos.bytestall.info:${listenPort}";
+            endpoint = "pixos.bytestall.info:${toString listenPort}";
             persistentKeepalive = 25;
           }
         ];