diff --git a/app-emulation/virtualbox/virtualbox-6.1.32-r1.ebuild b/app-emulation/virtualbox/virtualbox-6.1.32-r1.ebuild
index 96494cca02e56..cd47bd9cf2cc8 100644
--- a/app-emulation/virtualbox/virtualbox-6.1.32-r1.ebuild
+++ b/app-emulation/virtualbox/virtualbox-6.1.32-r1.ebuild
@@ -264,6 +264,10 @@ src_configure() {
 	if use amd64 && ! has_multilib_profile ; then
 		myconf+=( --disable-vmmraw )
 	fi
+	cat >> LocalConfig.kmk <<EOF || die
+CFLAGS=${CFLAGS}
+CXXFLAGS=${CXXFLAGS}
+EOF
 	# not an autoconf script
 	doecho ./configure "${myconf[@]}"
 }