diff --git a/src/pocketmine/network/mcpe/NetworkBinaryStream.php b/src/pocketmine/network/mcpe/NetworkBinaryStream.php
index 0fc159fc9..79ae169f8 100644
--- a/src/pocketmine/network/mcpe/NetworkBinaryStream.php
+++ b/src/pocketmine/network/mcpe/NetworkBinaryStream.php
@@ -148,6 +148,7 @@ class NetworkBinaryStream extends BinaryStream{
 			$this->putSkinImage($animation->getImage());
 			$this->putLInt($animation->getType());
 			$this->putLFloat($animation->getFrames());
+			$this->putLInt($animation->getExpressionType());
 		}
 		$this->putSkinImage($skin->getCapeImage());
 		$this->putString($skin->getGeometryData());