diff --git a/src/pocketmine/block/Vine.php b/src/pocketmine/block/Vine.php
index 84beb125b..256477511 100644
--- a/src/pocketmine/block/Vine.php
+++ b/src/pocketmine/block/Vine.php
@@ -26,9 +26,14 @@ use pocketmine\item\Item;
 use pocketmine\item\Tool;
 use pocketmine\level\Level;
 use pocketmine\math\AxisAlignedBB;
+use pocketmine\math\Vector3;
 use pocketmine\Player;
 
 class Vine extends Transparent{
+	const FLAG_SOUTH = 0x01;
+	const FLAG_WEST = 0x02;
+	const FLAG_NORTH = 0x04;
+	const FLAG_EAST = 0x08;
 
 	protected $id = self::VINE;
 
@@ -75,7 +80,7 @@ class Vine extends Transparent{
 
 		$flag = $this->meta > 0;
 
-		if(($this->meta & 0x02) > 0){
+		if(($this->meta & self::FLAG_WEST) > 0){
 			$f4 = max($f4, 0.0625);
 			$f1 = 0;
 			$f2 = 0;
@@ -85,7 +90,7 @@ class Vine extends Transparent{
 			$flag = true;
 		}
 
-		if(($this->meta & 0x08) > 0){
+		if(($this->meta & self::FLAG_EAST) > 0){
 			$f1 = min($f1, 0.9375);
 			$f4 = 1;
 			$f2 = 0;
@@ -95,7 +100,7 @@ class Vine extends Transparent{
 			$flag = true;
 		}
 
-		if(($this->meta & 0x01) > 0){
+		if(($this->meta & self::FLAG_SOUTH) > 0){
 			$f3 = min($f3, 0.9375);
 			$f6 = 1;
 			$f1 = 0;
@@ -105,7 +110,7 @@ class Vine extends Transparent{
 			$flag = true;
 		}
 
-		if(!$flag and $this->getSide(1)->isSolid()){
+		if(!$flag and $this->getSide(Vector3::SIDE_UP)->isSolid()){
 			$f2 = min($f2, 0.9375);
 			$f5 = 1;
 			$f1 = 0;
@@ -126,12 +131,13 @@ class Vine extends Transparent{
 
 
 	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
+		//TODO: multiple sides
 		if($target->isSolid()){
 			$faces = [
-				2 => 1,
-				3 => 4,
-				4 => 8,
-				5 => 2,
+				2 => self::FLAG_SOUTH,
+				3 => self::FLAG_NORTH,
+				4 => self::FLAG_EAST,
+				5 => self::FLAG_WEST,
 			];
 			if(isset($faces[$face])){
 				$this->meta = $faces[$face];
@@ -147,11 +153,16 @@ class Vine extends Transparent{
 	public function onUpdate($type){
 		if($type === Level::BLOCK_UPDATE_NORMAL){
 			$sides = [
+				1 => 3,
 				2 => 4,
-				3 => 1,
 				4 => 2,
-				5 => 8
+				8 => 5
 			];
+
+			if(!isset($sides[$this->meta])){
+				return false; //TODO: remove this once placing on multiple sides is supported (these are bitflags, not actual meta values
+			}
+
 			if(!$this->getSide($sides[$this->meta])->isSolid()){ //Replace with common break method
 				$this->level->useBreakOn($this);
 				return Level::BLOCK_UPDATE_NORMAL;