diff --git a/src/pocketmine/utils/TextFormat.php b/src/pocketmine/utils/TextFormat.php
index 3c3cc0ee8..7119030c7 100644
--- a/src/pocketmine/utils/TextFormat.php
+++ b/src/pocketmine/utils/TextFormat.php
@@ -25,6 +25,7 @@ namespace pocketmine\utils;
 
 use function is_array;
 use function json_encode;
+use function mb_scrub;
 use function preg_quote;
 use function preg_replace;
 use function preg_split;
@@ -77,14 +78,15 @@ abstract class TextFormat{
 	}
 
 	/**
-	 * Cleans the string from Minecraft codes and ANSI Escape Codes
+	 * Cleans the string from Minecraft codes, ANSI Escape Codes and invalid UTF-8 characters
 	 *
 	 * @param string $string
 	 * @param bool   $removeFormat
 	 *
-	 * @return string
+	 * @return string valid clean UTF-8
 	 */
 	public static function clean(string $string, bool $removeFormat = true) : string{
+		$string = mb_scrub($string, 'UTF-8');
 		if($removeFormat){
 			return str_replace(TextFormat::ESCAPE, "", preg_replace(["/" . TextFormat::ESCAPE . "[0-9a-fk-or]/u", "/\x1b[\\(\\][[0-9;\\[\\(]+[Bm]/"], "", $string));
 		}