diff --git a/nixos/modules/services/home-automation/wyoming/piper.nix b/nixos/modules/services/home-automation/wyoming/piper.nix
index 250d46c76bbd..c43f7ab1e00f 100644
--- a/nixos/modules/services/home-automation/wyoming/piper.nix
+++ b/nixos/modules/services/home-automation/wyoming/piper.nix
@@ -103,8 +103,8 @@ in
 
               useCUDA = mkOption {
                 type = bool;
-                default = config.cudaSupport;
-                defaultText = literalExpression "config.cudaSupport";
+                default = pkgs.config.cudaSupport;
+                defaultText = literalExpression "pkgs.config.cudaSupport";
                 description = ''
                   Whether to accelerate the underlying onnxruntime library with CUDA.
                 '';