diff --git a/setup.sh b/setup.sh
index 8f8998c..ca9a874 100644
--- a/setup.sh
+++ b/setup.sh
@@ -276,12 +276,12 @@ echo "echo \"iface lo inet loopback\" >> /etc/network/interfaces" >> /mnt/setup-
 for nic in "$nics"; do
 	echo "echo \"iface ${nic} inet manual\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
 done
-echo "echo \"iface br0 inet dhcp\"  >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
-echo "echo \"        post-up ip link set br0 address $macaddr\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
-echo "echo \"        bridge_ports $nics\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
-echo "echo \"        bridge_stp on\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
-echo "echo \"        dns-nameservers 127.0.0.53\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
-echo "echo \"source-directory /etc/network/interfaces.d\" >> /etc/network/interfaces" >> /mnt/setup-chroot.sh
+echo "echo \"iface br0 inet dhcp\"  >> /etc/network/interfaces.d/br0" >> /mnt/setup-chroot.sh
+echo "echo \"        post-up ip link set br0 address $macaddr\" >> /etc/network/interfaces/br0" >> /mnt/setup-chroot.sh
+echo "echo \"        bridge_ports $nics\" >> /etc/network/interfaces/br0" >> /mnt/setup-chroot.sh
+echo "echo \"        bridge_stp on\" >> /etc/network/interfaces/br0" >> /mnt/setup-chroot.sh
+echo "echo \"        dns-nameservers 127.0.0.53\" >> /etc/network/interfaces/br0" >> /mnt/setup-chroot.sh
+echo "echo \"source-directory /etc/network/interfaces.d\" > /etc/network/interfaces" >> /mnt/setup-chroot.sh
 echo "Done."