diff --git a/master.inc b/master.inc
index a861545..03b0da6 100644
--- a/master.inc
+++ b/master.inc
@@ -102,6 +102,10 @@ cp -vr kernel-tfg/{configure-linux.sh,extra-configs} .
 rm -rf kernel-tfg/
 ./configure-linux.sh
 
+%{make} savedefconfig
+cp defconfig arch/%{build_arch}/configs/defconfig
+%{make} defconfig
+
 %build
 %{make} PYTHON=%{__python3} %{make_targets}