diff --git a/pkgs/os-specific/linux/kernel/generic.nix b/pkgs/os-specific/linux/kernel/generic.nix
index a6067439a8f3..74e603623412 100644
--- a/pkgs/os-specific/linux/kernel/generic.nix
+++ b/pkgs/os-specific/linux/kernel/generic.nix
@@ -230,7 +230,6 @@ kernel.overrideAttrs (finalAttrs: previousAttrs: {
   passthru = previousAttrs.passthru or { } // basicArgs // {
     features = kernelFeatures;
     inherit commonStructuredConfig structuredExtraConfig extraMakeFlags isZen isHardened isLibre;
-    isVanilla = !(isHardened || isLibre || isZen);
     isXen = lib.warn "The isXen attribute is deprecated. All Nixpkgs kernels that support it now have Xen enabled." true;
 
     # Adds dependencies needed to edit the config:
diff --git a/pkgs/os-specific/linux/zfs/generic.nix b/pkgs/os-specific/linux/zfs/generic.nix
index d9cba044d501..263fcc448097 100644
--- a/pkgs/os-specific/linux/zfs/generic.nix
+++ b/pkgs/os-specific/linux/zfs/generic.nix
@@ -203,7 +203,7 @@ let
       inherit enableMail kernelModuleAttribute;
       latestCompatibleLinuxPackages = lib.pipe linuxKernel.packages [
         builtins.attrValues
-        (builtins.filter (kPkgs: (builtins.tryEval kPkgs).success && kPkgs ? kernel && kPkgs.kernel.passthru.isVanilla && kPkgs.kernel.pname == "linux" && kernelCompatible kPkgs.kernel))
+        (builtins.filter (kPkgs: (builtins.tryEval kPkgs).success && kPkgs ? kernel && kPkgs.kernel.pname == "linux" && kernelCompatible kPkgs.kernel))
         (builtins.sort (a: b: (lib.versionOlder a.kernel.version b.kernel.version)))
         lib.last
       ];