diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 04723de85..2d7ed1c08 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine;
 
-use pocketmine\block\Air;
 use pocketmine\block\Bed;
 use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
@@ -2571,8 +2570,10 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 									$this->inventory->setItemInHand($bow);
 								}
 							}
-							if($ev->getProjectile() instanceof Projectile){
-								$this->server->getPluginManager()->callEvent($projectileEv = new ProjectileLaunchEvent($ev->getProjectile()));
+
+							$projectile = $ev->getProjectile();
+							if($projectile instanceof Projectile){
+								$this->server->getPluginManager()->callEvent($projectileEv = new ProjectileLaunchEvent($projectile));
 								if($projectileEv->isCancelled()){
 									$ev->getProjectile()->kill();
 								}else{
diff --git a/src/pocketmine/block/BrownMushroom.php b/src/pocketmine/block/BrownMushroom.php
index d5002344e..2ca5ce010 100644
--- a/src/pocketmine/block/BrownMushroom.php
+++ b/src/pocketmine/block/BrownMushroom.php
@@ -67,8 +67,4 @@ class BrownMushroom extends Flowable{
 		return false;
 	}
 
-	protected function recalculateBoundingBox(){
-		return null;
-	}
-
 }
\ No newline at end of file
diff --git a/src/pocketmine/event/player/PlayerBucketEmptyEvent.php b/src/pocketmine/event/player/PlayerBucketEmptyEvent.php
index a4023b17b..14a1cda40 100644
--- a/src/pocketmine/event/player/PlayerBucketEmptyEvent.php
+++ b/src/pocketmine/event/player/PlayerBucketEmptyEvent.php
@@ -23,10 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\event\player;
 
-use pocketmine\block\Block;
-use pocketmine\item\Item;
-use pocketmine\Player;
-
 class PlayerBucketEmptyEvent extends PlayerBucketEvent{
 	public static $handlerList = null;
 
diff --git a/src/pocketmine/item/FlintSteel.php b/src/pocketmine/item/FlintSteel.php
index 60d5813e7..33686758a 100644
--- a/src/pocketmine/item/FlintSteel.php
+++ b/src/pocketmine/item/FlintSteel.php
@@ -25,7 +25,6 @@ namespace pocketmine\item;
 
 use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
-use pocketmine\block\Fire;
 use pocketmine\block\Solid;
 use pocketmine\level\Level;
 use pocketmine\math\Vector3;
diff --git a/src/pocketmine/level/Explosion.php b/src/pocketmine/level/Explosion.php
index 03313efef..73df0c067 100644
--- a/src/pocketmine/level/Explosion.php
+++ b/src/pocketmine/level/Explosion.php
@@ -33,7 +33,6 @@ use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item;
-use pocketmine\level\format\SubChunkInterface;
 use pocketmine\level\particle\HugeExplodeSeedParticle;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Math;
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 6c8c6df5d..b7eeff479 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -26,7 +26,6 @@ declare(strict_types=1);
  */
 namespace pocketmine\level;
 
-use pocketmine\block\Air;
 use pocketmine\block\Beetroot;
 use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
diff --git a/src/pocketmine/level/generator/populator/Pond.php b/src/pocketmine/level/generator/populator/Pond.php
index da4ccaa1c..417f89b93 100644
--- a/src/pocketmine/level/generator/populator/Pond.php
+++ b/src/pocketmine/level/generator/populator/Pond.php
@@ -25,7 +25,6 @@ namespace pocketmine\level\generator\populator;
 
 use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
-use pocketmine\block\Water;
 use pocketmine\level\ChunkManager;
 use pocketmine\math\Vector3;
 use pocketmine\utils\Random;