diff --git a/services/firewall/rules.nft b/services/firewall/rules.nft
index d1a87d4..4ecffbd 100644
--- a/services/firewall/rules.nft
+++ b/services/firewall/rules.nft
@@ -84,7 +84,7 @@ table inet firewall {
 
     # Allow MongoDB from LAN and VPN
     ip saddr { $lan_net, $vpn_net } tcp dport 27017 accept
-    ip6 saddr { $lan_net, $vpn_net } tcp dport 27017 accept
+    ip6 saddr $lan_net6 tcp dport 27017 accept
 
     # Allow Minecraft server access from LAN and VPN
     ip saddr { $lan_net, $vpn_net } tcp dport 25565 accept