diff --git a/nixos/modules/services/web-servers/lighttpd/gitweb.nix b/nixos/modules/services/web-servers/lighttpd/gitweb.nix
index f12cc9734465..c8d9836b0b68 100644
--- a/nixos/modules/services/web-servers/lighttpd/gitweb.nix
+++ b/nixos/modules/services/web-servers/lighttpd/gitweb.nix
@@ -60,7 +60,8 @@ in
               "/gitweb/"        => "${pkgs.git}/share/gitweb/gitweb.cgi"
           )
           setenv.add-environment = (
-              "GITWEB_CONFIG" => "${gitwebConfigFile}"
+              "GITWEB_CONFIG" => "${gitwebConfigFile}",
+              "HOME" => "${cfg.projectroot}"
           )
       }
     '';