diff --git a/src/pocketmine/block/Liquid.php b/src/pocketmine/block/Liquid.php
index 4837278d4..6ce560c0c 100644
--- a/src/pocketmine/block/Liquid.php
+++ b/src/pocketmine/block/Liquid.php
@@ -438,6 +438,6 @@ abstract class Liquid extends Transparent{
 	}
 
 	protected function canFlowInto(Block $block) : bool{
-		return $block->canBeFlowedInto() and !($block instanceof Liquid and $block->isSource()); //TODO: I think this should only be liquids of the same type
+		return $this->level->isInWorld($block->x, $block->y, $block->z) and $block->canBeFlowedInto() and !($block instanceof Liquid and $block->isSource()); //TODO: I think this should only be liquids of the same type
 	}
 }