diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 1b290908f..6b0b4f0a2 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -2703,11 +2703,11 @@ class Level implements ChunkManager, Metadatable{
 			$max = $this->provider->getWorldHeight();
 			$v = $spawn->floor();
 			$chunk = $this->getChunk($v->x >> 4, $v->z >> 4, false);
-			$x = $v->x & 0x0f;
-			$z = $v->z & 0x0f;
+			$x = (int) $v->x;
+			$z = (int) $v->z;
 			if($chunk !== null){
 				$y = (int) min($max - 2, $v->y);
-				$wasAir = ($chunk->getBlockId($x, $y - 1, $z) === 0);
+				$wasAir = ($chunk->getBlockId($x & 0x0f, $y - 1, $z & 0x0f) === 0);
 				for(; $y > 0; --$y){
 					if($this->isFullBlock($this->getBlockAt($x, $y, $z))){
 						if($wasAir){