diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 5b359285c..9f8759379 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -100,13 +100,15 @@ abstract class Entity extends Location implements Metadatable{
 	 * 49 (long)
 	 * 50 (long)
 	 * 51 (long)
-	 * 52 (short) */
-	const DATA_BOUNDING_BOX_WIDTH = 53; //float
-	const DATA_BOUNDING_BOX_HEIGHT = 54; //float
-	/* 56 (vector3f)
-	 * 57 (byte)
-	 * 58 (float)
-	 * 59 (float) */
+	 * 52 (short)
+	 * 53 (unknown) */
+	const DATA_BOUNDING_BOX_WIDTH = 54; //float
+	const DATA_BOUNDING_BOX_HEIGHT = 55; //float
+	/* 56 (unknown)
+	 * 57 (vector3f)
+	 * 58 (byte)
+	 * 59 (float)
+	 * 60 (float) */
 
 
 	const DATA_FLAG_ONFIRE = 0;