diff --git a/pkgs/os-specific/linux/zfs/generic.nix b/pkgs/os-specific/linux/zfs/generic.nix
index 3adcb97f6a69..51149ce36a0c 100644
--- a/pkgs/os-specific/linux/zfs/generic.nix
+++ b/pkgs/os-specific/linux/zfs/generic.nix
@@ -27,7 +27,6 @@ let
   , kernelModuleAttribute
   , extraPatches ? []
   , rev ? "zfs-${version}"
-  , isUnstable ? false
   , latestCompatibleLinuxPackages
   , kernelCompatible ? null
   , maintainers ? (with lib.maintainers; [ amarshall ])
diff --git a/pkgs/os-specific/linux/zfs/unstable.nix b/pkgs/os-specific/linux/zfs/unstable.nix
index 50e1cc1459e9..6996c0e77df0 100644
--- a/pkgs/os-specific/linux/zfs/unstable.nix
+++ b/pkgs/os-specific/linux/zfs/unstable.nix
@@ -26,7 +26,6 @@ callPackage ./generic.nix args {
   version = "2.2.5";
   # rev = "";
 
-  isUnstable = true;
   tests = [
     nixosTests.zfs.unstable
   ];