diff --git a/pkgs/top-level/config.nix b/pkgs/top-level/config.nix
index 4f6ae95b23f6..9b2ae12f595b 100644
--- a/pkgs/top-level/config.nix
+++ b/pkgs/top-level/config.nix
@@ -150,8 +150,6 @@ let
     };
 
     cudaSupport = mkMassRebuild {
-      type = types.bool;
-      default = false;
       feature = "build packages with CUDA support by default";
     };
 
@@ -184,8 +182,6 @@ let
     };
 
     rocmSupport = mkMassRebuild {
-      type = types.bool;
-      default = false;
       feature = "build packages with ROCm support by default";
     };