diff --git a/src/world/format/io/data/BedrockWorldData.php b/src/world/format/io/data/BedrockWorldData.php
index 62a7575f1..d9530cdad 100644
--- a/src/world/format/io/data/BedrockWorldData.php
+++ b/src/world/format/io/data/BedrockWorldData.php
@@ -40,6 +40,7 @@ use pocketmine\world\generator\GeneratorManager;
 use pocketmine\world\World;
 use pocketmine\world\WorldCreationOptions;
 use Symfony\Component\Filesystem\Path;
+use function array_map;
 use function file_get_contents;
 use function file_put_contents;
 use function strlen;
diff --git a/src/world/format/io/data/JavaWorldData.php b/src/world/format/io/data/JavaWorldData.php
index 8575ee729..a93ee90a7 100644
--- a/src/world/format/io/data/JavaWorldData.php
+++ b/src/world/format/io/data/JavaWorldData.php
@@ -26,7 +26,6 @@ namespace pocketmine\world\format\io\data;
 use pocketmine\nbt\BigEndianNbtSerializer;
 use pocketmine\nbt\NbtDataException;
 use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\nbt\tag\FloatTag;
 use pocketmine\nbt\tag\StringTag;
 use pocketmine\nbt\TreeRoot;
 use pocketmine\utils\Filesystem;