diff --git a/src/pocketmine/level/format/io/region/RegionLoader.php b/src/pocketmine/level/format/io/region/RegionLoader.php
index 0d17ae3b8..152d4aa67 100644
--- a/src/pocketmine/level/format/io/region/RegionLoader.php
+++ b/src/pocketmine/level/format/io/region/RegionLoader.php
@@ -34,7 +34,6 @@ use function ceil;
 use function chr;
 use function clearstatcache;
 use function fclose;
-use function feof;
 use function file_exists;
 use function filesize;
 use function fopen;
@@ -45,14 +44,12 @@ use function fwrite;
 use function is_resource;
 use function ksort;
 use function max;
-use function ord;
 use function pack;
 use function str_pad;
 use function str_repeat;
 use function stream_set_read_buffer;
 use function stream_set_write_buffer;
 use function strlen;
-use function substr;
 use function time;
 use function touch;
 use function unpack;