diff --git a/graphical/games/mangohud.nix b/graphical/games/mangohud.nix
index dbdbb15..6457fd4 100644
--- a/graphical/games/mangohud.nix
+++ b/graphical/games/mangohud.nix
@@ -69,7 +69,7 @@ in
 
     environment.variables = {
       MANGOHUD = 1; # enables mangohud by default on all vulkan games
-      MANGOHUD_CONFIG = cfg.extraConfig;
+      MANGOHUD_CONFIGFILE = pkgs.writeText "MangoHud.conf" cfg.extraConfig;
     };
   };
 }