diff --git a/composer.lock b/composer.lock
index 2b6a1be72..e5b15647a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -535,16 +535,16 @@
         },
         {
             "name": "pocketmine/locale-data",
-            "version": "2.2.0",
+            "version": "2.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/Language.git",
-                "reference": "dc88ad618a482e55b7c9fec162257efa62a67d6f"
+                "reference": "9fdd36f0ac3a2dfe1acacbee8b23eb6615129701"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/Language/zipball/dc88ad618a482e55b7c9fec162257efa62a67d6f",
-                "reference": "dc88ad618a482e55b7c9fec162257efa62a67d6f",
+                "url": "https://api.github.com/repos/pmmp/Language/zipball/9fdd36f0ac3a2dfe1acacbee8b23eb6615129701",
+                "reference": "9fdd36f0ac3a2dfe1acacbee8b23eb6615129701",
                 "shasum": ""
             },
             "type": "library",
@@ -552,9 +552,9 @@
             "description": "Language resources used by PocketMine-MP",
             "support": {
                 "issues": "https://github.com/pmmp/Language/issues",
-                "source": "https://github.com/pmmp/Language/tree/2.2.0"
+                "source": "https://github.com/pmmp/Language/tree/2.2.1"
             },
-            "time": "2021-12-15T02:01:24+00:00"
+            "time": "2021-12-17T23:42:12+00:00"
         },
         {
             "name": "pocketmine/log",
@@ -2388,16 +2388,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.10",
+            "version": "9.5.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "c814a05837f2edb0d1471d6e3f4ab3501ca3899a"
+                "reference": "2406855036db1102126125537adb1406f7242fdd"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/c814a05837f2edb0d1471d6e3f4ab3501ca3899a",
-                "reference": "c814a05837f2edb0d1471d6e3f4ab3501ca3899a",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/2406855036db1102126125537adb1406f7242fdd",
+                "reference": "2406855036db1102126125537adb1406f7242fdd",
                 "shasum": ""
             },
             "require": {
@@ -2475,11 +2475,11 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.10"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.11"
             },
             "funding": [
                 {
-                    "url": "https://phpunit.de/donate.html",
+                    "url": "https://phpunit.de/sponsors.html",
                     "type": "custom"
                 },
                 {
@@ -2487,7 +2487,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-09-25T07:38:51+00:00"
+            "time": "2021-12-25T07:07:57+00:00"
         },
         {
             "name": "sebastian/cli-parser",
diff --git a/src/player/Player.php b/src/player/Player.php
index 400a254c2..2dea72efc 100644
--- a/src/player/Player.php
+++ b/src/player/Player.php
@@ -136,6 +136,7 @@ use function floor;
 use function get_class;
 use function is_int;
 use function max;
+use function mb_strlen;
 use function microtime;
 use function min;
 use function preg_match;
@@ -1334,7 +1335,7 @@ class Player extends Human implements CommandSender, ChunkListener, IPlayer{
 
 		$message = TextFormat::clean($message, false);
 		foreach(explode("\n", $message) as $messagePart){
-			if(trim($messagePart) !== "" and strlen($messagePart) <= 255 and $this->messageCounter-- > 0){
+			if(trim($messagePart) !== "" and mb_strlen($messagePart, 'UTF-8') <= 512 and $this->messageCounter-- > 0){
 				if(strpos($messagePart, './') === 0){
 					$messagePart = substr($messagePart, 1);
 				}