diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 65cd4e0af..d1266d28b 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -2367,6 +2367,7 @@ class Level implements ChunkManager, Metadatable{
 
 		unset($this->blockCache[$chunkHash]);
 		unset($this->chunkCache[$chunkHash]);
+		unset($this->changedBlocks[$chunkHash]);
 		$chunk->setChanged();
 
 		if(!$this->isChunkInUse($chunkX, $chunkZ)){