diff --git a/src/functions/backend/setup/build-host-iptables-scripts.ts b/src/functions/backend/setup/build-host-iptables-scripts.ts
index 000e699..2e1592c 100644
--- a/src/functions/backend/setup/build-host-iptables-scripts.ts
+++ b/src/functions/backend/setup/build-host-iptables-scripts.ts
@@ -268,8 +268,8 @@ export default function buildHostIptablesScripts({
         `iptables -A ${forward} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT`,
         `iptables -A ${input} -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT`,
         ``,
-        `iptables -A ${input} -i${interface_name} -p udp --dport 53 -j ACCEPT`,
-        `iptables -A ${input} -i${interface_name} -p tcp --dport 53 -j ACCEPT`,
+        `iptables -A ${input} -i ${interface_name} -p udp --dport 53 -j ACCEPT`,
+        `iptables -A ${input} -i ${interface_name} -p tcp --dport 53 -j ACCEPT`,
         ``,
         ...accept_lines,
         ``,