diff --git a/src/Server.php b/src/Server.php
index c1be895c9..8ae8b3f02 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -58,9 +58,9 @@ use pocketmine\network\mcpe\protocol\ProtocolInfo;
 use pocketmine\network\mcpe\protocol\serializer\PacketBatch;
 use pocketmine\network\mcpe\raklib\RakLibInterface;
 use pocketmine\network\Network;
+use pocketmine\network\query\DedicatedQueryNetworkInterface;
 use pocketmine\network\query\QueryHandler;
 use pocketmine\network\query\QueryInfo;
-use pocketmine\network\query\DedicatedQueryNetworkInterface;
 use pocketmine\network\upnp\UPnP;
 use pocketmine\permission\BanList;
 use pocketmine\permission\DefaultPermissions;
diff --git a/src/network/query/DedicatedQueryNetworkInterface.php b/src/network/query/DedicatedQueryNetworkInterface.php
index 5a083a9e3..500d3e747 100644
--- a/src/network/query/DedicatedQueryNetworkInterface.php
+++ b/src/network/query/DedicatedQueryNetworkInterface.php
@@ -33,7 +33,10 @@ use function socket_last_error;
 use function socket_recvfrom;
 use function socket_select;
 use function socket_sendto;
+use function socket_set_nonblock;
 use function socket_strerror;
+use function strlen;
+use function time;
 use function trim;
 use const AF_INET;
 use const PHP_INT_MAX;
diff --git a/src/utils/Filesystem.php b/src/utils/Filesystem.php
index ad5b5b117..01b6f5781 100644
--- a/src/utils/Filesystem.php
+++ b/src/utils/Filesystem.php
@@ -42,7 +42,7 @@ use function str_replace;
 use function stream_get_contents;
 use function strlen;
 use function strpos;
-use function uasort;
+use function uksort;
 use function unlink;
 use const DIRECTORY_SEPARATOR;
 use const LOCK_EX;