diff --git a/main.tf b/main.tf
index d91cf1b..31e197e 100644
--- a/main.tf
+++ b/main.tf
@@ -61,7 +61,7 @@ resource "hcloud_firewall" "vps" {
     direction       = "out"
     protocol        = "udp"
     port            = "1-65535"
-    destination_ips = ["0.0.0.0/0", "::/0"]
+    source_ips      = ["0.0.0.0/0", "::/0"]
     description     = "All UDP outbound"
   }