diff --git a/variables.tf b/variables.tf
index 0e70b4a..5db4a65 100644
--- a/variables.tf
+++ b/variables.tf
@@ -7,6 +7,7 @@ variable "lawndale_dns_host" {
 variable "lawndale_dns_port" {
   type        = number
   description = "Port where the lawndale internal DNS server listens on"
+  default     = 53
 }
 
 variable "lawndale_dns_transport" {