diff --git a/pkgs/tools/misc/ipxe/default.nix b/pkgs/tools/misc/ipxe/default.nix
index e4c161b2e51..4346d25ca07 100644
--- a/pkgs/tools/misc/ipxe/default.nix
+++ b/pkgs/tools/misc/ipxe/default.nix
@@ -18,6 +18,8 @@ stdenv.mkDerivation {
 
   preConfigure = "cd src";
 
+  NIX_CFLAGS_COMPILE = "-Wno-error";
+
   makeFlags =
     [ "ECHO_E_BIN_ECHO=echo" "ECHO_E_BIN_ECHO_E=echo" # No /bin/echo here.
       "ISOLINUX_BIN_LIST=${syslinux}/share/syslinux/isolinux.bin"