diff --git a/linux/nix/default.nix b/linux/nix/default.nix
index 756eb0b..9466bd3 100644
--- a/linux/nix/default.nix
+++ b/linux/nix/default.nix
@@ -19,6 +19,7 @@
       packages =
         let
           default = pkgs.callPackage ./pkg {
+            flutterMode = "debug";
             src = self;
           };
         in
diff --git a/linux/nix/pkg/default.nix b/linux/nix/pkg/default.nix
index 7914430..0ceb7de 100644
--- a/linux/nix/pkg/default.nix
+++ b/linux/nix/pkg/default.nix
@@ -6,12 +6,14 @@
   libclang,
   flutter,
   src,
+  flutterMode ? "release",
 }:
 
 flutter.buildFlutterApplication {
   pname = "nexus";
   version = "0.1.0";
   inherit src;
+  flutterMode = flutterMode;
 
   preBuild = ''
     cp ${callPackage ./gomuks.nix { inherit src; }}/lib/* .