diff --git a/src/pocketmine/level/format/SimpleChunk.php b/src/pocketmine/level/format/SimpleChunk.php
index 88e58a470..d818744fa 100644
--- a/src/pocketmine/level/format/SimpleChunk.php
+++ b/src/pocketmine/level/format/SimpleChunk.php
@@ -143,7 +143,7 @@ class SimpleChunk{
 	 */
 	public function getBlockData($x, $y, $z){
 		$m = ord($this->meta[$y >> 4]{(($y & 0x0f) << 7) + ($z << 3) + ($x >> 1)});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			return $m & 0x0F;
 		}else{
 			return $m >> 4;
@@ -159,7 +159,7 @@ class SimpleChunk{
 	public function setBlockData($x, $y, $z, $data){
 		$i = (($y & 0x0f) << 7) + ($z << 3) + ($x >> 1);
 		$old_m = ord($this->meta[$y >> 4]{$i});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			$this->meta[$y >> 4]{$i} = chr(($old_m & 0xf0) | ($data & 0x0f));
 		}else{
 			$this->meta[$y >> 4]{$i} = chr((($data & 0x0f) << 4) | ($old_m & 0x0f));
diff --git a/src/pocketmine/level/format/anvil/ChunkSection.php b/src/pocketmine/level/format/anvil/ChunkSection.php
index dba61776c..94ec48d80 100644
--- a/src/pocketmine/level/format/anvil/ChunkSection.php
+++ b/src/pocketmine/level/format/anvil/ChunkSection.php
@@ -53,7 +53,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 
 	public function getBlockData($x, $y, $z){
 		$m = ord($this->data{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			return $m & 0x0F;
 		}else{
 			return $m >> 4;
@@ -63,7 +63,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 	public function setBlockData($x, $y, $z, $data){
 		$i = ($y << 7) + ($z << 3) + ($x >> 1);
 		$old_m = ord($this->data{$i});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			$this->data{$i} = chr(($old_m & 0xf0) | ($data & 0x0f));
 		}else{
 			$this->data{$i} = chr((($data & 0x0f) << 4) | ($old_m & 0x0f));
@@ -74,7 +74,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 		$i = ($y << 8) + ($z << 4) + $x;
 		$blockId = ord($this->blocks{$i});
 		$m = ord($this->data{$i >> 1});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			$meta = $m & 0x0F;
 		}else{
 			$meta = $m >> 4;
@@ -90,7 +90,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 		if($meta !== null){
 			$i >>= 1;
 			$old_m = ord($this->data{$i});
-			if(($y & 1) === 0){
+			if(($x & 1) === 0){
 				$this->data{$i} = chr(($old_m & 0xf0) | ($meta & 0x0f));
 			}else{
 				$this->data{$i} = chr((($meta & 0x0f) << 4) | ($old_m & 0x0f));
@@ -100,7 +100,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 
 	public function getBlockSkyLight($x, $y, $z){
 		$sl = ord($this->skyLight{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			return $sl & 0x0F;
 		}else{
 			return $sl >> 4;
@@ -110,7 +110,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 	public function setBlockSkyLight($x, $y, $z, $level){
 		$i = ($y << 7) + ($z << 3) + ($x >> 1);
 		$old_sl = ord($this->skyLight{$i});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			$this->skyLight{$i} = chr(($old_sl & 0xf0) | ($level & 0x0f));
 		}else{
 			$this->skyLight{$i} = chr((($level & 0x0f) << 4) | ($old_sl & 0x0f));
@@ -119,7 +119,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 
 	public function getBlockLight($x, $y, $z){
 		$l = ord($this->blockLight{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			return $l & 0x0F;
 		}else{
 			return $l >> 4;
@@ -129,7 +129,7 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 	public function setBlockLight($x, $y, $z, $level){
 		$i = ($y << 7) + ($z << 3) + ($x >> 1);
 		$old_l = ord($this->blockLight{$i});
-		if(($y & 1) === 0){
+		if(($x & 1) === 0){
 			$this->blockLight{$i} = chr(($old_l & 0xf0) | ($level & 0x0f));
 		}else{
 			$this->blockLight{$i} = chr((($level & 0x0f) << 4) | ($old_l & 0x0f));
@@ -148,8 +148,14 @@ class ChunkSection implements \pocketmine\level\format\ChunkSection{
 	public function getBlockDataColumn($x, $z){
 		$i = ($z << 3) + ($x >> 1);
 		$column = "";
-		for($y = 0; $y < 16; $y += 2){
-			$column .= chr((ord($this->data{($y << 7) + $i}) & 0x0f) | ((ord($this->data{(($y + 1) << 7) + $i}) & 0x0f) << 4));
+		if(($x & 1) === 0){
+			for($y = 0; $y < 16; $y += 2){
+				$column .= chr((ord($this->data{($y << 7) + $i}) & 0x0f) | ((ord($this->data{(($y + 1) << 7) + $i}) & 0x0f) << 4));
+			}
+		}else{
+			for($y = 0; $y < 16; $y += 2){
+				$column .= chr(((ord($this->data{($y << 7) + $i}) & 0xf0) >> 4) | (ord($this->data{(($y + 1) << 7) + $i}) & 0xf0));
+			}
 		}
 
 		return $column;