diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index e8ce1cc83..c245fa2b2 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -686,7 +686,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 
 			$aliases = $command->getAliases();
 			if(!empty($aliases)){
-				if(!\in_array($data->commandName, $aliases, true)){
+				if(!in_array($data->commandName, $aliases, true)){
 					//work around a client bug which makes the original name not show when aliases are used
 					$aliases[] = $data->commandName;
 				}
diff --git a/src/pocketmine/PocketMine.php b/src/pocketmine/PocketMine.php
index ec11fa1ea..cc353b1c0 100644
--- a/src/pocketmine/PocketMine.php
+++ b/src/pocketmine/PocketMine.php
@@ -171,8 +171,8 @@ namespace pocketmine {
 
 	$opts = getopt("", ["data:", "plugins:", "no-wizard", "enable-profiler"]);
 
-	define('pocketmine\DATA', isset($opts["data"]) ? $opts["data"] . DIRECTORY_SEPARATOR : \realpath(\getcwd()) . DIRECTORY_SEPARATOR);
-	define('pocketmine\PLUGIN_PATH', isset($opts["plugins"]) ? $opts["plugins"] . DIRECTORY_SEPARATOR : \realpath(\getcwd()) . DIRECTORY_SEPARATOR . "plugins" . DIRECTORY_SEPARATOR);
+	define('pocketmine\DATA', isset($opts["data"]) ? $opts["data"] . DIRECTORY_SEPARATOR : realpath(getcwd()) . DIRECTORY_SEPARATOR);
+	define('pocketmine\PLUGIN_PATH', isset($opts["plugins"]) ? $opts["plugins"] . DIRECTORY_SEPARATOR : realpath(getcwd()) . DIRECTORY_SEPARATOR . "plugins" . DIRECTORY_SEPARATOR);
 
 	if(!file_exists(\pocketmine\DATA)){
 		mkdir(\pocketmine\DATA, 0777, true);
diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 7256e7078..94b4305f1 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -2162,7 +2162,7 @@ class Server{
 		$this->logger->logException($e, $trace);
 
 		$lastError = [
-			"type" => \get_class($e),
+			"type" => get_class($e),
 			"message" => $errstr,
 			"fullFile" => $e->getFile(),
 			"file" => $errfile,
diff --git a/src/pocketmine/entity/Effect.php b/src/pocketmine/entity/Effect.php
index df8a8ddb2..9edc3b55d 100644
--- a/src/pocketmine/entity/Effect.php
+++ b/src/pocketmine/entity/Effect.php
@@ -111,8 +111,8 @@ class Effect{
 	 */
 	public static function getEffectByName(string $name) : ?Effect{
 		$const = self::class . "::" . strtoupper($name);
-		if(\defined($const)){
-			return self::getEffect(\constant($const));
+		if(defined($const)){
+			return self::getEffect(constant($const));
 		}
 		return null;
 	}
diff --git a/src/pocketmine/entity/projectile/Projectile.php b/src/pocketmine/entity/projectile/Projectile.php
index e88e0cc6d..7cd579690 100644
--- a/src/pocketmine/entity/projectile/Projectile.php
+++ b/src/pocketmine/entity/projectile/Projectile.php
@@ -215,7 +215,7 @@ abstract class Projectile extends Entity{
 			}elseif($blockHit !== null){
 				$ev = new ProjectileHitBlockEvent($this, $hitResult, $blockHit);
 			}else{
-				\assert(false, "unknown hit type");
+				assert(false, "unknown hit type");
 			}
 
 			if($ev !== null){
diff --git a/src/pocketmine/event/EventPriority.php b/src/pocketmine/event/EventPriority.php
index 1fffbbcd1..0de4e1e4f 100644
--- a/src/pocketmine/event/EventPriority.php
+++ b/src/pocketmine/event/EventPriority.php
@@ -82,8 +82,8 @@ abstract class EventPriority{
 	public static function fromString(string $name) : int{
 		$name = strtoupper($name);
 		$const = self::class . "::" . $name;
-		if($name !== "ALL" and \defined($const)){
-			return \constant($const);
+		if($name !== "ALL" and defined($const)){
+			return constant($const);
 		}
 
 		throw new \InvalidArgumentException("Unable to resolve priority \"$name\"");
diff --git a/src/pocketmine/plugin/PluginDescription.php b/src/pocketmine/plugin/PluginDescription.php
index a126cbd6b..fc20ed2b2 100644
--- a/src/pocketmine/plugin/PluginDescription.php
+++ b/src/pocketmine/plugin/PluginDescription.php
@@ -59,7 +59,7 @@ class PluginDescription{
 	 * @param string|array $yamlString
 	 */
 	public function __construct($yamlString){
-		$this->loadMap(!is_array($yamlString) ? \yaml_parse($yamlString) : $yamlString);
+		$this->loadMap(!is_array($yamlString) ? yaml_parse($yamlString) : $yamlString);
 	}
 
 	/**
diff --git a/src/pocketmine/plugin/PluginManager.php b/src/pocketmine/plugin/PluginManager.php
index 134ffd976..861ea2e1a 100644
--- a/src/pocketmine/plugin/PluginManager.php
+++ b/src/pocketmine/plugin/PluginManager.php
@@ -796,7 +796,7 @@ class PluginManager{
 				try{
 					$priority = isset($tags["priority"]) ? EventPriority::fromString($tags["priority"]) : EventPriority::NORMAL;
 				}catch(\InvalidArgumentException $e){
-					throw new PluginException("Event handler " . \get_class($listener) . "->" . $method->getName() . "() declares invalid/unknown priority \"" . $tags["priority"] . "\"");
+					throw new PluginException("Event handler " . get_class($listener) . "->" . $method->getName() . "() declares invalid/unknown priority \"" . $tags["priority"] . "\"");
 				}
 				$ignoreCancelled = isset($tags["ignoreCancelled"]) && strtolower($tags["ignoreCancelled"]) === "true";