diff --git a/src/pocketmine/block/Block.php b/src/pocketmine/block/Block.php
index afe6e7917..b9d048afc 100644
--- a/src/pocketmine/block/Block.php
+++ b/src/pocketmine/block/Block.php
@@ -268,7 +268,8 @@ class Block extends Position{
 		if(($t = $this->world->getTile($this)) !== null){
 			$t->onBlockDestroyed();
 		}
-		return $this->getWorld()->setBlock($this, VanillaBlocks::AIR());
+		$this->getWorld()->setBlock($this, VanillaBlocks::AIR());
+		return true;
 	}
 
 	/**
diff --git a/src/pocketmine/block/Ice.php b/src/pocketmine/block/Ice.php
index eccf9dee5..71429e0a1 100644
--- a/src/pocketmine/block/Ice.php
+++ b/src/pocketmine/block/Ice.php
@@ -43,7 +43,8 @@ class Ice extends Transparent{
 
 	public function onBreak(Item $item, ?Player $player = null) : bool{
 		if(($player === null or $player->isSurvival()) and !$item->hasEnchantment(Enchantment::SILK_TOUCH())){
-			return $this->getWorld()->setBlock($this, VanillaBlocks::WATER());
+			$this->getWorld()->setBlock($this, VanillaBlocks::WATER());
+			return true;
 		}
 		return parent::onBreak($item, $player);
 	}
diff --git a/src/pocketmine/world/ChunkManager.php b/src/pocketmine/world/ChunkManager.php
index 129cee286..eeac6332f 100644
--- a/src/pocketmine/world/ChunkManager.php
+++ b/src/pocketmine/world/ChunkManager.php
@@ -47,9 +47,9 @@ interface ChunkManager{
 	 * @param int   $z
 	 * @param Block $block
 	 *
-	 * @return bool TODO: remove
+	 * @throws \InvalidArgumentException
 	 */
-	public function setBlockAt(int $x, int $y, int $z, Block $block) : bool;
+	public function setBlockAt(int $x, int $y, int $z, Block $block) : void;
 
 	/**
 	 * @param int  $chunkX
diff --git a/src/pocketmine/world/SimpleChunkManager.php b/src/pocketmine/world/SimpleChunkManager.php
index 8869f4189..6baaa5166 100644
--- a/src/pocketmine/world/SimpleChunkManager.php
+++ b/src/pocketmine/world/SimpleChunkManager.php
@@ -58,13 +58,13 @@ class SimpleChunkManager implements ChunkManager{
 		return VanillaBlocks::AIR();
 	}
 
-	public function setBlockAt(int $x, int $y, int $z, Block $block) : bool{
+	public function setBlockAt(int $x, int $y, int $z, Block $block) : void{
 		if($this->terrainPointer->moveTo($x, $y, $z, true)){
 			$this->terrainPointer->currentSubChunk->setFullBlock($x & 0xf, $y & 0xf, $z & 0xf, $block->getFullId());
 			$this->terrainPointer->currentChunk->setChanged(true);
-			return true;
+		}else{
+			throw new \InvalidArgumentException("Cannot set block at coordinates x=$x,y=$y,z=$z, terrain is not loaded or out of bounds");
 		}
-		return false;
 	}
 
 	/**
diff --git a/src/pocketmine/world/World.php b/src/pocketmine/world/World.php
index b4d7034b7..3f0a72500 100644
--- a/src/pocketmine/world/World.php
+++ b/src/pocketmine/world/World.php
@@ -1446,18 +1446,15 @@ class World implements ChunkManager{
 
 	/**
 	 * Sets the block at the given Vector3 coordinates.
-	 * @see World::setBlockAt()
 	 *
 	 * @param Vector3 $pos
 	 * @param Block   $block
 	 * @param bool    $update
 	 *
-	 * @return bool Whether the block has been updated or not
-	 *
 	 * @throws \InvalidArgumentException if the position is out of the world bounds
 	 */
-	public function setBlock(Vector3 $pos, Block $block, bool $update = true) : bool{
-		return $this->setBlockAt((int) floor($pos->x), (int) floor($pos->y), (int) floor($pos->z), $block, $update);
+	public function setBlock(Vector3 $pos, Block $block, bool $update = true) : void{
+		$this->setBlockAt((int) floor($pos->x), (int) floor($pos->y), (int) floor($pos->z), $block, $update);
 	}
 
 	/**
@@ -1472,11 +1469,9 @@ class World implements ChunkManager{
 	 * @param Block $block
 	 * @param bool  $update
 	 *
-	 * @return bool Whether the block has been updated or not
-	 *
 	 * @throws \InvalidArgumentException if the position is out of the world bounds
 	 */
-	public function setBlockAt(int $x, int $y, int $z, Block $block, bool $update = true) : bool{
+	public function setBlockAt(int $x, int $y, int $z, Block $block, bool $update = true) : void{
 		if(!$this->isInWorld($x, $y, $z)){
 			throw new \InvalidArgumentException("Pos x=$x,y=$y,z=$z is outside of the world bounds");
 		}
@@ -1511,8 +1506,6 @@ class World implements ChunkManager{
 		}
 
 		$this->timings->setBlock->stopTiming();
-
-		return true;
 	}
 
 	/**