diff --git a/src/Data/Hanzi.php b/src/Data/Hanzi.php
index 5ed78be8c..9e64c02e6 100644
--- a/src/Data/Hanzi.php
+++ b/src/Data/Hanzi.php
@@ -14,7 +14,7 @@ namespace chillerlan\QRCode\Data;
 use chillerlan\QRCode\Common\{BitBuffer, Mode};
 use Throwable;
 use function chr, implode, intdiv, is_string, mb_convert_encoding, mb_detect_encoding,
-	mb_detect_order, mb_internal_encoding, mb_strlen, ord, sprintf, strlen;
+	mb_internal_encoding, mb_strlen, ord, sprintf, strlen;
 
 /**
  * Hanzi (simplified Chinese) mode, GBT18284-2000: 13-bit double-byte characters from the GB2312/GB18030 character set
@@ -55,9 +55,12 @@ final class Hanzi extends QRDataModeAbstract{
 	}
 
 	public static function convertEncoding(string $string):string{
-		mb_detect_order([mb_internal_encoding(), 'UTF-8', 'GB2312', 'GB18030', 'CP936', 'EUC-CN', 'HZ']);
 
-		$detected = mb_detect_encoding($string, null, true);
+		$detected = mb_detect_encoding(
+			$string,
+			[mb_internal_encoding(), 'UTF-8', 'GB2312', 'GB18030', 'CP936', 'EUC-CN', 'HZ'],
+			true,
+		);
 
 		if($detected === false){
 			throw new QRCodeDataException('mb_detect_encoding error');
diff --git a/src/Data/Kanji.php b/src/Data/Kanji.php
index 6c959d872..8c1da4b94 100644
--- a/src/Data/Kanji.php
+++ b/src/Data/Kanji.php
@@ -14,7 +14,7 @@ namespace chillerlan\QRCode\Data;
 use chillerlan\QRCode\Common\{BitBuffer, Mode};
 use Throwable;
 use function chr, implode, intdiv, is_string, mb_convert_encoding, mb_detect_encoding,
-	mb_detect_order, mb_internal_encoding, mb_strlen, ord, sprintf, strlen;
+	mb_internal_encoding, mb_strlen, ord, sprintf, strlen;
 
 /**
  * Kanji mode: 13-bit double-byte characters from the Shift-JIS character set
@@ -48,9 +48,7 @@ final class Kanji extends QRDataModeAbstract{
 	}
 
 	public static function convertEncoding(string $string):string{
-		mb_detect_order([mb_internal_encoding(), 'UTF-8', 'SJIS', 'SJIS-2004']);
-
-		$detected = mb_detect_encoding($string, null, true);
+		$detected = mb_detect_encoding($string, [mb_internal_encoding(), 'UTF-8', 'SJIS', 'SJIS-2004'], true);
 
 		if($detected === false){
 			throw new QRCodeDataException('mb_detect_encoding error');