diff --git a/nixos/modules/services/web-apps/matomo.nix b/nixos/modules/services/web-apps/matomo.nix
index 8e0f9f8582d..1e34aff8d17 100644
--- a/nixos/modules/services/web-apps/matomo.nix
+++ b/nixos/modules/services/web-apps/matomo.nix
@@ -115,7 +115,7 @@ in {
             Either this option or the webServerUser option is mandatory.
             Set this to {} to just enable the virtualHost if you don't need any customization.
             If enabled, then by default, the <option>serverName</option> is
-            <literal>${user}.''${config.networking.hostName}.''${config.networking.domain}</literal>,
+            <literal>''${user}.''${config.networking.hostName}.''${config.networking.domain}</literal>,
             SSL is active, and certificates are acquired via ACME.
             If this is set to null (the default), no nginx virtualHost will be configured.
         '';