diff --git a/nixos/modules/services/web-servers/nginx/default.nix b/nixos/modules/services/web-servers/nginx/default.nix
index 9e93e56b9c2c..1150459d40e1 100644
--- a/nixos/modules/services/web-servers/nginx/default.nix
+++ b/nixos/modules/services/web-servers/nginx/default.nix
@@ -5,13 +5,16 @@ with lib;
 let
   cfg = config.services.nginx;
   virtualHosts = mapAttrs (vhostName: vhostConfig:
-    vhostConfig // {
+    let
       serverName = if vhostConfig.serverName != null
         then vhostConfig.serverName
         else vhostName;
+    in
+    vhostConfig // {
+      inherit serverName;
     } // (optionalAttrs vhostConfig.enableACME {
-      sslCertificate = "/var/lib/acme/${vhostName}/fullchain.pem";
-      sslCertificateKey = "/var/lib/acme/${vhostName}/key.pem";
+      sslCertificate = "/var/lib/acme/${serverName}/fullchain.pem";
+      sslCertificateKey = "/var/lib/acme/${serverName}/key.pem";
     })
   ) cfg.virtualHosts;
   enableIPv6 = config.networking.enableIPv6;