diff --git a/src/pocketmine/level/format/EmptySubChunk.php b/src/pocketmine/level/format/EmptySubChunk.php
index 1daf86723..5ca3980e0 100644
--- a/src/pocketmine/level/format/EmptySubChunk.php
+++ b/src/pocketmine/level/format/EmptySubChunk.php
@@ -77,22 +77,6 @@ class EmptySubChunk implements SubChunkInterface{
 		return -1;
 	}
 
-	public function getBlockIdColumn(int $x, int $z) : string{
-		return "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	public function getBlockDataColumn(int $x, int $z) : string{
-		return "\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	public function getBlockLightColumn(int $x, int $z) : string{
-		return "\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	public function getBlockSkyLightColumn(int $x, int $z) : string{
-		return "\xff\xff\xff\xff\xff\xff\xff\xff";
-	}
-
 	public function getBlockIdArray() : string{
 		return str_repeat("\x00", 4096);
 	}
diff --git a/src/pocketmine/level/format/SubChunk.php b/src/pocketmine/level/format/SubChunk.php
index 2971690ea..1b6ed2f20 100644
--- a/src/pocketmine/level/format/SubChunk.php
+++ b/src/pocketmine/level/format/SubChunk.php
@@ -30,7 +30,6 @@ use function defined;
 use function ord;
 use function str_repeat;
 use function strlen;
-use function substr;
 use function substr_count;
 
 if(!defined(__NAMESPACE__ . '\ZERO_NIBBLE_ARRAY')){
@@ -145,22 +144,6 @@ class SubChunk implements SubChunkInterface{
 		return -1; //highest block not in this subchunk
 	}
 
-	public function getBlockIdColumn(int $x, int $z) : string{
-		return substr($this->ids, ($x << 8) | ($z << 4), 16);
-	}
-
-	public function getBlockDataColumn(int $x, int $z) : string{
-		return substr($this->data, ($x << 7) | ($z << 3), 8);
-	}
-
-	public function getBlockLightColumn(int $x, int $z) : string{
-		return substr($this->blockLight, ($x << 7) | ($z << 3), 8);
-	}
-
-	public function getBlockSkyLightColumn(int $x, int $z) : string{
-		return substr($this->skyLight, ($x << 7) | ($z << 3), 8);
-	}
-
 	public function getBlockIdArray() : string{
 		assert(strlen($this->ids) === 4096, "Wrong length of ID array, expecting 4096 bytes, got " . strlen($this->ids));
 		return $this->ids;
diff --git a/src/pocketmine/level/format/SubChunkInterface.php b/src/pocketmine/level/format/SubChunkInterface.php
index 71226db90..5d3c718f0 100644
--- a/src/pocketmine/level/format/SubChunkInterface.php
+++ b/src/pocketmine/level/format/SubChunkInterface.php
@@ -116,38 +116,6 @@ interface SubChunkInterface{
 	 */
 	public function getHighestBlockAt(int $x, int $z) : int;
 
-	/**
-	 * @param int $x
-	 * @param int $z
-	 *
-	 * @return string
-	 */
-	public function getBlockIdColumn(int $x, int $z) : string;
-
-	/**
-	 * @param int $x
-	 * @param int $z
-	 *
-	 * @return string
-	 */
-	public function getBlockDataColumn(int $x, int $z) : string;
-
-	/**
-	 * @param int $x
-	 * @param int $z
-	 *
-	 * @return string
-	 */
-	public function getBlockLightColumn(int $x, int $z) : string;
-
-	/**
-	 * @param int $x
-	 * @param int $z
-	 *
-	 * @return string
-	 */
-	public function getBlockSkyLightColumn(int $x, int $z) : string;
-
 	/**
 	 * @return string
 	 */
diff --git a/src/pocketmine/level/format/io/region/McRegion.php b/src/pocketmine/level/format/io/region/McRegion.php
index 56f1e0326..277e6ff89 100644
--- a/src/pocketmine/level/format/io/region/McRegion.php
+++ b/src/pocketmine/level/format/io/region/McRegion.php
@@ -65,10 +65,10 @@ class McRegion extends RegionLevelProvider{
 			for($z = 0; $z < 16; ++$z){
 				for($y = 0; $y < 8; ++$y){
 					$subChunk = $subChunks[$y];
-					$ids .= $subChunk->getBlockIdColumn($x, $z);
-					$data .= $subChunk->getBlockDataColumn($x, $z);
-					$skyLight .= $subChunk->getBlockSkyLightColumn($x, $z);
-					$blockLight .= $subChunk->getBlockLightColumn($x, $z);
+					$ids .= substr($subChunk->getBlockIdArray(), ($x << 8) | ($z << 4), 16);
+					$data .= substr($subChunk->getBlockDataArray(), ($x << 7) | ($z << 3), 8);
+					$skyLight .= substr($subChunk->getBlockSkyLightArray(), ($x << 7) | ($z << 3), 8);
+					$blockLight .= substr($subChunk->getBlockLightArray(), ($x << 7) | ($z << 3), 8);
 				}
 			}
 		}