diff --git a/src/pocketmine/item/Banner.php b/src/pocketmine/item/Banner.php
index d4f160e33..2fdf48daa 100644
--- a/src/pocketmine/item/Banner.php
+++ b/src/pocketmine/item/Banner.php
@@ -37,7 +37,7 @@ class Banner extends Item{
 	public const TAG_PATTERN_COLOR = TileBanner::TAG_PATTERN_COLOR;
 	public const TAG_PATTERN_NAME = TileBanner::TAG_PATTERN_NAME;
 
-	public function __construct(int $meta = 0){
+	public function __construct(int $meta){
 		parent::__construct(self::BANNER, $meta, "Banner");
 	}
 
diff --git a/src/pocketmine/item/Bed.php b/src/pocketmine/item/Bed.php
index 6433b8f58..7fe88e3e3 100644
--- a/src/pocketmine/item/Bed.php
+++ b/src/pocketmine/item/Bed.php
@@ -27,7 +27,7 @@ use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
 
 class Bed extends Item{
-	public function __construct(int $meta = 0){
+	public function __construct(int $meta){
 		parent::__construct(self::BED, $meta, "Bed");
 	}
 
diff --git a/src/pocketmine/item/Dye.php b/src/pocketmine/item/Dye.php
index 87aaa184c..382c7a583 100644
--- a/src/pocketmine/item/Dye.php
+++ b/src/pocketmine/item/Dye.php
@@ -27,7 +27,7 @@ use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
 
 class Dye extends Item{
-	public function __construct(int $meta = 0){
+	public function __construct(int $meta){
 		parent::__construct(self::DYE, $meta, "Dye");
 	}
 
diff --git a/src/pocketmine/item/Potion.php b/src/pocketmine/item/Potion.php
index 2f56a8739..6c925543e 100644
--- a/src/pocketmine/item/Potion.php
+++ b/src/pocketmine/item/Potion.php
@@ -255,7 +255,7 @@ class Potion extends Item implements Consumable{
 		return [];
 	}
 
-	public function __construct(int $meta = 0){
+	public function __construct(int $meta){
 		parent::__construct(self::POTION, $meta, "Potion");
 	}
 
diff --git a/src/pocketmine/item/SplashPotion.php b/src/pocketmine/item/SplashPotion.php
index fe1db4311..15293dd11 100644
--- a/src/pocketmine/item/SplashPotion.php
+++ b/src/pocketmine/item/SplashPotion.php
@@ -27,7 +27,7 @@ use pocketmine\nbt\tag\CompoundTag;
 
 class SplashPotion extends ProjectileItem{
 
-	public function __construct(int $meta = 0){
+	public function __construct(int $meta){
 		parent::__construct(self::SPLASH_POTION, $meta, "Splash Potion");
 	}