diff --git a/pkgs/os-specific/linux/kernel/manual-config.nix b/pkgs/os-specific/linux/kernel/manual-config.nix
index 7bc1de8ed0b..dd619993ff0 100644
--- a/pkgs/os-specific/linux/kernel/manual-config.nix
+++ b/pkgs/os-specific/linux/kernel/manual-config.nix
@@ -121,7 +121,7 @@ let
       postInstall = (optionalString installsFirmware ''
         mkdir -p $out/lib/firmware
       '') + (if (platform ? kernelDTB && platform.kernelDTB) then ''
- 	make "$makeFlags" dtbs
+ 	make $makeFlags "''${makeFlagsArray[@]}" dtbs
         cp arch/$arch/boot/dts/*dtb $out
       '' else "") + (if isModular then ''
         make modules_install $makeFlags "''${makeFlagsArray[@]}" \