diff --git a/src/pocketmine/nbt/NBT.php b/src/pocketmine/nbt/NBT.php
index a2ba63ba5..68e15d642 100644
--- a/src/pocketmine/nbt/NBT.php
+++ b/src/pocketmine/nbt/NBT.php
@@ -427,7 +427,7 @@ class NBT{
 			if($c === ":"){
 				++$offset;
 				break;
-			}elseif($c !== " " and $c !== "\r" and $c !== "\n" and $c !== "\t"){
+			}elseif($c !== " " and $c !== "\r" and $c !== "\n" and $c !== "\t" and $c !== "\""){
 				$key .= $c;
 			}
 		}