diff --git a/main.go b/main.go
index 5c79529..79038cf 100644
--- a/main.go
+++ b/main.go
@@ -175,7 +175,7 @@ func main() {
 
 func hasIPv6() bool {
 	fmt.Println("Testing IPv6 connectivity")
-	c, err := net.Dial("tcp", "[2620:fe::fe]:80")
+	c, err := net.Dial("tcp", "[2620:fe::fe]:443")
 	if c != nil {
 		c.Close()
 	}