diff --git a/nix/bcachefs-kernel.nix b/nix/bcachefs-kernel.nix
index 2e4f339d..c937df4c 100644
--- a/nix/bcachefs-kernel.nix
+++ b/nix/bcachefs-kernel.nix
@@ -4,7 +4,7 @@
 , fetchFromGitHub
 , buildLinux
 , commit
-, diffHash ? lib.fakeSha256
+, sha256 ? lib.fakeSha256
 , kernelVersion ? "5.13.0"
 , kernelPatches ? [] # must always be defined in bcachefs' all-packages.nix entry because it's also a top-level attribute supplied by callPackage
 , argsOverride ? {}
@@ -26,7 +26,7 @@ buildLinux {
 		owner = "koverstreet";
 		repo = "bcachefs";
 		rev = commit;
-		sha256 = diffHash;
+		inherit sha256;
 	};
 
 	extraConfig = "BCACHEFS_FS m";
diff --git a/nix/overlay.nix b/nix/overlay.nix
index 947242ba..9c33396f 100644
--- a/nix/overlay.nix
+++ b/nix/overlay.nix
@@ -22,7 +22,7 @@ final: prev: {
 		kernel = final.callPackage ./bcachefs-kernel.nix {
 			commit = final.bcachefs.tools.bcachefs_revision;
 			# This needs to be recalculated for every revision change
-			diffHash = "sha256-XSA0dBZZL8RXplgjpoLOFSULM8t/0Ztz8xlhLn9hdyw=";
+			sha256 = "sha256-XSA0dBZZL8RXplgjpoLOFSULM8t/0Ztz8xlhLn9hdyw=";
 			kernelPatches = [];
 		};
 	};