diff --git a/pkgs/os-specific/linux/dmraid/default.nix b/pkgs/os-specific/linux/dmraid/default.nix
index 3a6f31fa552..fa26f38941b 100644
--- a/pkgs/os-specific/linux/dmraid/default.nix
+++ b/pkgs/os-specific/linux/dmraid/default.nix
@@ -35,6 +35,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ lvm2 ];
 
+  # Hand-written Makefile does not have full dependencies to survive
+  # parallel build:
+  #   tools/dmraid.c:12:10: fatal error: dmraid/dmraid.h: No such file
+  enableParallelBuilding = false;
+
   meta = {
     description = "Old-style RAID configuration utility";
     longDescription = ''