diff --git a/src/pocketmine/wizard/SetupWizard.php b/src/pocketmine/wizard/SetupWizard.php
index 06e4d34f7..e4c8f5156 100644
--- a/src/pocketmine/wizard/SetupWizard.php
+++ b/src/pocketmine/wizard/SetupWizard.php
@@ -46,41 +46,40 @@ class SetupWizard{
 	}
 
 	public function run(){
-		echo "[*] PocketMine-MP set-up wizard\n";
+		$this->message("PocketMine-MP set-up wizard");
 
 		$langs = BaseLang::getLanguageList();
 		if(empty($langs)){
-			echo "[!] No language files found, please use provided builds or clone the repository recursively." . PHP_EOL;
+			$this->error("No language files found, please use provided builds or clone the repository recursively.");
 			return false;
 		}
 
-		echo "[*] Please select a language:\n";
+		$this->message("Please select a language");
 		foreach($langs as $short => $native){
-			echo " $native => $short\n";
+			$this->writeLine(" $native => $short");
 		}
+
 		do{
-			echo "[?] Language (eng): ";
-			$lang = strtolower($this->getInput("eng"));
+			$lang = strtolower($this->getInput("Language", "eng"));
 			if(!isset($langs[$lang])){
-				echo "[!] Couldn't find the language\n";
+				$this->error("Couldn't find the language");
 				$lang = null;
 			}
 		}while($lang === null);
 
 		$this->lang = new BaseLang($lang);
 
-
-		echo "[*] " . $this->lang->get("language_has_been_selected") . "\n";
+		$this->message($this->lang->get("language_has_been_selected"));
 
 		if(!$this->showLicense()){
 			return false;
 		}
 
-		echo "[?] " . $this->lang->get("skip_installer") . " (y/N): ";
-		if(strtolower($this->getInput()) === "y"){
+		if(strtolower($this->getInput($this->lang->get("skip_installer"), "n", "y/N")) === "y"){
 			return true;
 		}
-		echo "\n";
+
+		$this->writeLine();
 		$this->welcome();
 		$this->generateBaseConfig();
 		$this->generateUserFiles();
@@ -88,11 +87,12 @@ class SetupWizard{
 		$this->networkFunctions();
 
 		$this->endWizard();
+
 		return true;
 	}
 
 	private function showLicense(){
-		echo $this->lang->get("welcome_to_pocketmine") . "\n";
+		$this->message($this->lang->get("welcome_to_pocketmine"));
 		echo <<<LICENSE
 
   This program is free software: you can redistribute it and/or modify
@@ -101,9 +101,9 @@ class SetupWizard{
   (at your option) any later version.
 
 LICENSE;
-		echo "\n[?] " . $this->lang->get("accept_license") . " (y/N): ";
-		if(strtolower($this->getInput("n")) != "y"){
-			echo "[!] " . $this->lang->get("you_have_to_accept_the_license") . "\n";
+		$this->writeLine();
+		if(strtolower($this->getInput($this->lang->get("accept_license"), "n", "y/N")) !== "y"){
+			$this->error($this->lang->get("you_have_to_accept_the_license"));
 			sleep(5);
 
 			return false;
@@ -113,61 +113,67 @@ LICENSE;
 	}
 
 	private function welcome(){
-		echo "[*] " . $this->lang->get("setting_up_server_now") . "\n";
-		echo "[*] " . $this->lang->get("default_values_info") . "\n";
-		echo "[*] " . $this->lang->get("server_properties") . "\n";
-
+		$this->message($this->lang->get("setting_up_server_now"));
+		$this->message($this->lang->get("default_values_info"));
+		$this->message($this->lang->get("server_properties"));
 	}
 
 	private function generateBaseConfig(){
 		$config = new Config(\pocketmine\DATA . "server.properties", Config::PROPERTIES);
-		echo "[?] " . $this->lang->get("name_your_server") . " (" . self::DEFAULT_NAME . "): ";
-		$config->set("motd", ($name = $this->getInput(self::DEFAULT_NAME)));
+
+		$config->set("motd", ($name = $this->getInput($this->lang->get("name_your_server"), self::DEFAULT_NAME)));
 		$config->set("server-name", $name);
-		echo "[*] " . $this->lang->get("port_warning") . "\n";
+
+		$this->message($this->lang->get("port_warning"));
+
 		do{
-			echo "[?] " . $this->lang->get("server_port") . " (" . self::DEFAULT_PORT . "): ";
-			$port = (int) $this->getInput(self::DEFAULT_PORT);
+			$port = (int) $this->getInput($this->lang->get("server_port"), (string) self::DEFAULT_PORT);
 			if($port <= 0 or $port > 65535){
-				echo "[!] " . $this->lang->get("invalid_port") . "\n";
+				$this->error($this->lang->get("invalid_port"));
+				continue;
 			}
-		}while($port <= 0 or $port > 65535);
+
+			break;
+		}while(true);
 		$config->set("server-port", $port);
 
-		echo "[*] " . $this->lang->get("gamemode_info") . "\n";
+		$this->message($this->lang->get("gamemode_info"));
+
 		do{
-			echo "[?] " . $this->lang->get("default_gamemode") . ": (" . self::DEFAULT_GAMEMODE . "): ";
-			$gamemode = (int) $this->getInput(self::DEFAULT_GAMEMODE);
+			$gamemode = (int) $this->getInput($this->lang->get("default_gamemode"), (string) self::DEFAULT_GAMEMODE);
 		}while($gamemode < 0 or $gamemode > 3);
 		$config->set("gamemode", $gamemode);
-		echo "[?] " . $this->lang->get("max_players") . " (" . self::DEFAULT_PLAYERS . "): ";
-		$config->set("max-players", (int) $this->getInput(self::DEFAULT_PLAYERS));
-		echo "[*] " . $this->lang->get("spawn_protection_info") . "\n";
-		echo "[?] " . $this->lang->get("spawn_protection") . " (Y/n): ";
-		if(strtolower($this->getInput("y")) == "n"){
+
+		$config->set("max-players", (int) $this->getInput($this->lang->get("max_players"), (string) self::DEFAULT_PLAYERS));
+
+		$this->message($this->lang->get("spawn_protection_info"));
+
+		if(strtolower($this->getInput($this->lang->get("spawn_protection"), "y", "Y/n")) === "n"){
 			$config->set("spawn-protection", -1);
 		}else{
 			$config->set("spawn-protection", 16);
 		}
+
 		$config->save();
 	}
 
 	private function generateUserFiles(){
-		echo "[*] " . $this->lang->get("op_info") . "\n";
-		echo "[?] " . $this->lang->get("op_who") . ": ";
-		$op = strtolower($this->getInput(""));
+		$this->message($this->lang->get("op_info"));
+
+		$op = strtolower($this->getInput($this->lang->get("op_who"), ""));
 		if($op === ""){
-			echo "[!] " . $this->lang->get("op_warning") . "\n";
+			$this->error($this->lang->get("op_warning"));
 		}else{
 			$ops = new Config(\pocketmine\DATA . "ops.txt", Config::ENUM);
 			$ops->set($op, true);
 			$ops->save();
 		}
-		echo "[*] " . $this->lang->get("whitelist_info") . "\n";
-		echo "[?] " . $this->lang->get("whitelist_enable") . " (y/N): ";
+
+		$this->message($this->lang->get("whitelist_info"));
+
 		$config = new Config(\pocketmine\DATA . "server.properties", Config::PROPERTIES);
-		if(strtolower($this->getInput("n")) === "y"){
-			echo "[!] " . $this->lang->get("whitelist_warning") . "\n";
+		if(strtolower($this->getInput($this->lang->get("whitelist_enable"), "n", "y/N")) === "y"){
+			$this->error($this->lang->get("whitelist_warning"));
 			$config->set("white-list", true);
 		}else{
 			$config->set("white-list", false);
@@ -177,55 +183,78 @@ LICENSE;
 
 	private function networkFunctions(){
 		$config = new Config(\pocketmine\DATA . "server.properties", Config::PROPERTIES);
-		echo "[!] " . $this->lang->get("query_warning1") . "\n";
-		echo "[!] " . $this->lang->get("query_warning2") . "\n";
-		echo "[?] " . $this->lang->get("query_disable") . " (y/N): ";
-		if(strtolower($this->getInput("n")) === "y"){
+		$this->error($this->lang->get("query_warning1"));
+		$this->error($this->lang->get("query_warning2"));
+		if(strtolower($this->getInput($this->lang->get("query_disable"), "n", "y/N")) === "y"){
 			$config->set("enable-query", false);
 		}else{
 			$config->set("enable-query", true);
 		}
 
-		echo "[*] " . $this->lang->get("rcon_info") . "\n";
-		echo "[?] " . $this->lang->get("rcon_enable") . " (y/N): ";
-		if(strtolower($this->getInput("n")) === "y"){
+		$this->message($this->lang->get("rcon_info"));
+		if(strtolower($this->getInput($this->lang->get("rcon_enable"), "n", "y/N")) === "y"){
 			$config->set("enable-rcon", true);
 			$password = substr(base64_encode(random_bytes(20)), 3, 10);
 			$config->set("rcon.password", $password);
-			echo "[*] " . $this->lang->get("rcon_password") . ": " . $password . "\n";
+			$this->message($this->lang->get("rcon_password") . ": " . $password);
 		}else{
 			$config->set("enable-rcon", false);
 		}
 
-		/*echo "[*] " . $this->lang->usage_info . "\n";
-		echo "[?] " . $this->lang->usage_disable . " (y/N): ";
-		if(strtolower($this->getInput("n")) === "y"){
-			$config->set("send-usage", false);
-		}else{
-			$config->set("send-usage", true);
-		}*/
 		$config->save();
 
 
-		echo "[*] " . $this->lang->get("ip_get") . "\n";
+		$this->message($this->lang->get("ip_get"));
 
 		$externalIP = Utils::getIP();
+		if($externalIP === false){
+			$externalIP = "unknown (server offline)";
+		}
 		$internalIP = gethostbyname(trim(`hostname`));
 
-		echo "[!] " . $this->lang->translateString("ip_warning", ["EXTERNAL_IP" => $externalIP, "INTERNAL_IP" => $internalIP]) . "\n";
-		echo "[!] " . $this->lang->get("ip_confirm");
-		$this->getInput();
+		$this->error($this->lang->translateString("ip_warning", ["EXTERNAL_IP" => $externalIP, "INTERNAL_IP" => $internalIP]));
+		$this->error($this->lang->get("ip_confirm"));
+		$this->readLine();
 	}
 
 	private function endWizard(){
-		echo "[*] " . $this->lang->get("you_have_finished") . "\n";
-		echo "[*] " . $this->lang->get("pocketmine_plugins") . "\n";
-		echo "[*] " . $this->lang->get("pocketmine_will_start") . "\n\n\n";
+		$this->message($this->lang->get("you_have_finished"));
+		$this->message($this->lang->get("pocketmine_plugins"));
+		$this->message($this->lang->get("pocketmine_will_start"));
+
+		$this->writeLine();
+		$this->writeLine();
+
 		sleep(4);
 	}
 
-	private function getInput($default = ""){
-		$input = trim(fgets(STDIN));
+	private function writeLine(string $line = ""){
+		echo $line . PHP_EOL;
+	}
+
+	private function readLine() : string{
+		return trim((string) fgets(STDIN));
+	}
+
+	private function message(string $message){
+		$this->writeLine("[*] " . $message);
+	}
+
+	private function error(string $message){
+		$this->writeLine("[!] " . $message);
+	}
+
+	private function getInput(string $message, string $default = "", string $options = ""){
+		$message = "[?] " . $message;
+
+		if($options !== "" or $default !== ""){
+			$message .= " (" . ($options === "" ? $default : $options) . ")";
+		}
+		$message .= ": ";
+
+		echo $message;
+
+		$input = $this->readLine();
 
 		return $input === "" ? $default : $input;
 	}