diff --git a/setup.sh b/setup.sh
index e62a769..0609de8 100644
--- a/setup.sh
+++ b/setup.sh
@@ -460,10 +460,10 @@ for nic in "$nics"; do
 	niclist="$niclist $nic"
 done
 echo "iface br0 inet dhcp"  >> /mnt/etc/network/interfaces.d/br0
-echo "        post-up ip link set br0 address $macaddr" >> /mnt/etc/network/interfaces/br0
-echo "        bridge_ports${niclist}" >> /mnt/etc/network/interfaces/br0
-echo "        bridge_stp on" >> /mnt/etc/network/interfaces/br0
-echo "        dns-nameservers 127.0.0.53" >> /mnt/etc/network/interfaces/br0
+echo "        post-up ip link set br0 address $macaddr" >> /mnt/etc/network/interfaces.d/br0
+echo "        bridge_ports${niclist}" >> /mnt/etc/network/interfaces.d/br0
+echo "        bridge_stp on" >> /mnt/etc/network/interfaces.d/br0
+echo "        dns-nameservers 127.0.0.53" >> /mnt/etc/network/interfaces.d/br0
 echo "source-directory /etc/network/interfaces.d" > /mnt/etc/network/interfaces
 echo "Done."