diff --git a/src/pocketmine/block/Bed.php b/src/pocketmine/block/Bed.php
index c1b59ade4..a6901e9df 100644
--- a/src/pocketmine/block/Bed.php
+++ b/src/pocketmine/block/Bed.php
@@ -27,6 +27,7 @@ use pocketmine\event\TranslationContainer;
 use pocketmine\item\Item;
 use pocketmine\level\Level;
 use pocketmine\math\AxisAlignedBB;
+use pocketmine\math\Vector3;
 use pocketmine\nbt\tag\ByteTag;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\IntTag;
@@ -106,7 +107,7 @@ class Bed extends Transparent{
 	}
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
-		$down = $this->getSide(0);
+		$down = $this->getSide(Vector3::SIDE_DOWN);
 		if($down->isTransparent() === false){
 			$faces = [
 				0 => 3,
@@ -116,7 +117,7 @@ class Bed extends Transparent{
 			];
 			$d = $player instanceof Player ? $player->getDirection() : 0;
 			$next = $this->getSide($faces[($d + 3) % 4]);
-			$downNext = $this->getSide(0);
+			$downNext = $next->getSide(Vector3::SIDE_DOWN);
 			if($next->canBeReplaced() === true and $downNext->isTransparent() === false){
 				$meta = (($d + 3) % 4) & 0x03;
 				$this->getLevel()->setBlock($block, Block::get($this->id, $meta), true, true);