diff --git a/hosts/modules/server/ntfy-sh.nix b/hosts/modules/server/ntfy-sh.nix
index 822f639..728bb5e 100644
--- a/hosts/modules/server/ntfy-sh.nix
+++ b/hosts/modules/server/ntfy-sh.nix
@@ -18,7 +18,7 @@ in {
   services.nginx.virtualHosts.${hostname} = {
     enableACME = true;
     forceSSL = true;
-    locations."/" = { proxyPass = "http://127.0.0.1:${port}"; };
+    locations."/" = { proxyPass = "http://127.0.0.1:${toString port}"; };
   };
   networking.firewall.allowedTCPPorts = [ port ];
 }