diff --git a/flake.nix b/flake.nix
index bbb2ea1..251b067 100644
--- a/flake.nix
+++ b/flake.nix
@@ -80,6 +80,8 @@
         ] ++ self.packages.${system}.default.dlopenBuildInputs;
 
         cmakeFlags = [
+          "-DTOMATO_TOX_AV=ON"
+
           "-DTOMATO_ASAN=OFF"
           "-DCMAKE_BUILD_TYPE=RelWithDebInfo"
           #"-DCMAKE_BUILD_TYPE=Debug"