diff --git a/extensions/Servers/Proxmox/views/firewall.blade.php b/extensions/Servers/Proxmox/views/firewall.blade.php
index 8067640b3..8e843d1c0 100644
--- a/extensions/Servers/Proxmox/views/firewall.blade.php
+++ b/extensions/Servers/Proxmox/views/firewall.blade.php
@@ -1725,7 +1725,8 @@
                                 Protocol
                                 <span class="text-xs font-normal text-base/50">(auto-filled by macro)</span>
                             </label>
-                            <select wire:model="ruleProto" class="w-full px-3 py-2 border border-neutral rounded-lg bg-background text-sm">
+                            <select wire:model="ruleProto" class="w-full px-3 py-2 border border-neutral rounded-lg bg-background text-sm" required>
+                                <option value="" disabled selected>Select Protocol</option>
                                 <option value="tcp">TCP</option>
                                 <option value="udp">UDP</option>
                                 <option value="icmp">ICMP</option>