diff --git a/src/NBTStream.php b/src/NBTStream.php
index 413308a..3253b23 100644
--- a/src/NBTStream.php
+++ b/src/NBTStream.php
@@ -149,7 +149,7 @@ public function write($data){
 		$this->offset = 0;
 		$this->buffer = "";
 
-		if($data instanceof CompoundTag){
+		if($data instanceof NamedTag){
 			$this->writeTag($data);
 
 			return $this->buffer;