diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 819106933a..73146e02be 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -1175,9 +1175,11 @@ class Level implements ChunkManager, Metadatable{
 			for($x = $minX; $x <= $maxX; ++$x){
 				for($y = $minY; $y <= $maxY; ++$y){
 					$block = $this->getBlockAt($x, $y, $z);
-					if(!$block->canPassThrough() and $block->collidesWithBB($bb)){
+					if(!$block->canPassThrough()){
 						foreach($block->getCollisionBoxes() as $blockBB){
-							$collides[] = $blockBB;
+							if($blockBB->intersectsWith($bb)){
+								$collides[] = $blockBB;
+							}
 						}
 					}
 				}