diff --git a/pkgs/os-specific/linux/zfs/default.nix b/pkgs/os-specific/linux/zfs/default.nix
index 6088e86218d1..2535745e3595 100644
--- a/pkgs/os-specific/linux/zfs/default.nix
+++ b/pkgs/os-specific/linux/zfs/default.nix
@@ -43,6 +43,9 @@ let
 
       postPatch = optionalString buildKernel ''
         patchShebangs scripts
+      '' + optionalString stdenv.hostPlatform.isMusl ''
+        substituteInPlace config/user-libtirpc.m4 \
+          --replace /usr/include/tirpc ${libtirpc}/include/tirpc
       '';
 
       nativeBuildInputs = [ autoreconfHook nukeReferences ]