diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index c2ea76c77..a1e2e6821 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -114,6 +114,7 @@ use function asort;
 use function assert;
 use function base64_encode;
 use function class_exists;
+use function cli_set_process_title;
 use function count;
 use function define;
 use function explode;
diff --git a/src/pocketmine/plugin/PluginDescription.php b/src/pocketmine/plugin/PluginDescription.php
index 7cdd1e95a..153c37752 100644
--- a/src/pocketmine/plugin/PluginDescription.php
+++ b/src/pocketmine/plugin/PluginDescription.php
@@ -38,6 +38,7 @@ use function strlen;
 use function strtoupper;
 use function substr;
 use function version_compare;
+use function yaml_parse;
 
 class PluginDescription{
 	private $map;
diff --git a/src/pocketmine/plugin/PluginManager.php b/src/pocketmine/plugin/PluginManager.php
index 0c2abdb27..48e8e12a1 100644
--- a/src/pocketmine/plugin/PluginManager.php
+++ b/src/pocketmine/plugin/PluginManager.php
@@ -40,6 +40,7 @@ use pocketmine\timings\TimingsHandler;
 use pocketmine\utils\Utils;
 use function array_intersect;
 use function array_map;
+use function array_merge;
 use function array_pad;
 use function class_exists;
 use function count;
diff --git a/src/pocketmine/resourcepacks/ZippedResourcePack.php b/src/pocketmine/resourcepacks/ZippedResourcePack.php
index 0364ccd37..6a12ad12b 100644
--- a/src/pocketmine/resourcepacks/ZippedResourcePack.php
+++ b/src/pocketmine/resourcepacks/ZippedResourcePack.php
@@ -34,6 +34,7 @@ use function filesize;
 use function fopen;
 use function fread;
 use function fseek;
+use function gettype;
 use function hash_file;
 use function implode;
 
diff --git a/src/pocketmine/utils/Utils.php b/src/pocketmine/utils/Utils.php
index 5f388c592..c9e36d72c 100644
--- a/src/pocketmine/utils/Utils.php
+++ b/src/pocketmine/utils/Utils.php
@@ -58,6 +58,7 @@ use function is_object;
 use function is_readable;
 use function is_string;
 use function json_decode;
+use function ltrim;
 use function memory_get_usage;
 use function ob_end_clean;
 use function ob_get_contents;
@@ -72,6 +73,7 @@ use function preg_match_all;
 use function preg_replace;
 use function proc_close;
 use function proc_open;
+use function rtrim;
 use function sha1;
 use function spl_object_hash;
 use function str_pad;
@@ -82,6 +84,7 @@ use function stripos;
 use function strlen;
 use function strpos;
 use function strtolower;
+use function strtr;
 use function substr;
 use function sys_get_temp_dir;
 use function trim;