diff --git a/rootfs-kernel/kernel.sh b/rootfs-kernel/kernel.sh
index 33c2755..020dde0 100755
--- a/rootfs-kernel/kernel.sh
+++ b/rootfs-kernel/kernel.sh
@@ -6,7 +6,7 @@ set -ex
 
 KERNEL_VERSION=$1
 WD=../out
-NPROC=4
+NPROC=8
 
 ## Install build tools
 # pacman -Syu base-devel bc pahole --ignore linux-firmware
@@ -48,6 +48,4 @@ make -C "$WD"/linux/ kvm_guest.config
 #make -C "$WD"/linux/ -j$NPROC EXTRA_CFLAGS=-Wno-error=use-after-free
 make -C "$WD"/linux/ -j$NPROC WERROR=0
 
-cp "$WD"/vmlinux "$WD"/vmlinux-$KERNEL_VERSION
-
-sudo rm -rf "$WD"/linux
+cp "$WD"/linux/vmlinux "$WD"/vmlinux-$KERNEL_VERSION