diff --git a/src/pocketmine/Achievement.php b/src/pocketmine/Achievement.php
index 54ce474f8..273ed5803 100644
--- a/src/pocketmine/Achievement.php
+++ b/src/pocketmine/Achievement.php
@@ -116,7 +116,7 @@ abstract class Achievement{
 	public static function broadcast(Player $player, string $achievementId) : bool{
 		if(isset(Achievement::$list[$achievementId])){
 			$translation = new TranslationContainer("chat.type.achievement", [$player->getDisplayName(), TextFormat::GREEN . Achievement::$list[$achievementId]["name"] . TextFormat::RESET]);
-			if(Server::getInstance()->getConfigBoolean("announce-player-achievements", true) === true){
+			if(Server::getInstance()->getConfigBool("announce-player-achievements", true) === true){
 				Server::getInstance()->broadcastMessage($translation);
 			}else{
 				$player->sendMessage($translation);
diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 336e23aa8..db7b96cc0 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -2404,7 +2404,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 						}
 
 						$cancelled = false;
-						if($target instanceof Player and $this->server->getConfigBoolean("pvp", true) === false){
+						if($target instanceof Player and $this->server->getConfigBool("pvp", true) === false){
 							$cancelled = true;
 						}
 
@@ -2419,7 +2419,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 						}elseif($target instanceof Player){
 							if(($target->getGamemode() & 0x01) > 0){
 								return true;
-							}elseif($this->server->getConfigBoolean("pvp") !== true){
+							}elseif($this->server->getConfigBool("pvp") !== true){
 								$cancelled = true;
 							}
 
diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 75ee9bd72..f4468b531 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -428,7 +428,7 @@ class Server{
 	 * @return bool
 	 */
 	public function getGenerateStructures() : bool{
-		return $this->getConfigBoolean("generate-structures", true);
+		return $this->getConfigBool("generate-structures", true);
 	}
 
 	/**
@@ -442,7 +442,7 @@ class Server{
 	 * @return bool
 	 */
 	public function getForceGamemode() : bool{
-		return $this->getConfigBoolean("force-gamemode", false);
+		return $this->getConfigBool("force-gamemode", false);
 	}
 
 	/**
@@ -537,7 +537,7 @@ class Server{
 	 * @return bool
 	 */
 	public function hasWhitelist() : bool{
-		return $this->getConfigBoolean("white-list", false);
+		return $this->getConfigBool("white-list", false);
 	}
 
 	/**
@@ -551,14 +551,14 @@ class Server{
 	 * @return bool
 	 */
 	public function getAllowFlight() : bool{
-		return $this->getConfigBoolean("allow-flight", false);
+		return $this->getConfigBool("allow-flight", false);
 	}
 
 	/**
 	 * @return bool
 	 */
 	public function isHardcore() : bool{
-		return $this->getConfigBoolean("hardcore", false);
+		return $this->getConfigBool("hardcore", false);
 	}
 
 	/**
@@ -1234,7 +1234,7 @@ class Server{
 	 *
 	 * @return bool
 	 */
-	public function getConfigBoolean(string $variable, bool $defaultValue = false) : bool{
+	public function getConfigBool(string $variable, bool $defaultValue = false) : bool{
 		$v = getopt("", ["$variable::"]);
 		if(isset($v[$variable])){
 			$value = $v[$variable];
@@ -1256,6 +1256,18 @@ class Server{
 		return false;
 	}
 
+	/**
+	 * @deprecated
+	 *
+	 * @param string $variable
+	 * @param bool   $defaultValue
+	 *
+	 * @return bool
+	 */
+	public function getConfigBoolean(string $variable, bool $defaultValue = false) : bool{
+		return $this->getConfigBool($variable, $defaultValue);
+	}
+
 	/**
 	 * @param string $variable
 	 * @param bool   $value
@@ -1528,7 +1540,7 @@ class Server{
 
 			$this->scheduler = new ServerScheduler();
 
-			if($this->getConfigBoolean("enable-rcon", false) === true){
+			if($this->getConfigBool("enable-rcon", false) === true){
 				try{
 					$this->rcon = new RCON(
 						$this,
@@ -1560,9 +1572,9 @@ class Server{
 			$this->banByIP->load();
 
 			$this->maxPlayers = $this->getConfigInt("max-players", 20);
-			$this->setAutoSave($this->getConfigBoolean("auto-save", true));
+			$this->setAutoSave($this->getConfigBool("auto-save", true));
 
-			$this->onlineMode = $this->getConfigBoolean("xbox-auth", true);
+			$this->onlineMode = $this->getConfigBool("xbox-auth", true);
 			if($this->onlineMode){
 				$this->logger->notice($this->getLanguage()->translateString("pocketmine.server.auth", ["enabled", "will"]));
 				$this->logger->notice($this->getLanguage()->translateString("pocketmine.server.authProperty", ["disable", "false"]));
@@ -1572,7 +1584,7 @@ class Server{
 				$this->logger->warning($this->getLanguage()->translateString("pocketmine.server.authProperty", ["enable", "true"]));
 			}
 
-			if($this->getConfigBoolean("hardcore", false) === true and $this->getDifficulty() < Level::DIFFICULTY_HARD){
+			if($this->getConfigBool("hardcore", false) === true and $this->getDifficulty() < Level::DIFFICULTY_HARD){
 				$this->setConfigInt("difficulty", Level::DIFFICULTY_HARD);
 			}
 
@@ -1992,7 +2004,7 @@ class Server{
 		$this->properties->reload();
 		$this->maxPlayers = $this->getConfigInt("max-players", 20);
 
-		if($this->getConfigBoolean("hardcore", false) === true and $this->getDifficulty() < Level::DIFFICULTY_HARD){
+		if($this->getConfigBool("hardcore", false) === true and $this->getDifficulty() < Level::DIFFICULTY_HARD){
 			$this->setConfigInt("difficulty", Level::DIFFICULTY_HARD);
 		}
 
@@ -2100,7 +2112,7 @@ class Server{
 	 * Starts the PocketMine-MP server and starts processing ticks and packets
 	 */
 	public function start(){
-		if($this->getConfigBoolean("enable-query", true) === true){
+		if($this->getConfigBool("enable-query", true) === true){
 			$this->queryHandler = new QueryHandler();
 		}