diff --git a/Source/Base.lproj/Credits.rtf b/Source/Base.lproj/Credits.rtf
index cfac32a8..9ac378aa 100644
--- a/Source/Base.lproj/Credits.rtf
+++ b/Source/Base.lproj/Credits.rtf
@@ -1,5 +1,5 @@
 {\rtf1\ansi\ansicpg1252\cocoartf2580
-\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 NotoSansCJKtc-Medium;}
+\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 system;}
 {\colortbl;\red255\green255\blue255;}
 {\*\expandedcolortbl;;}
 \margl1440\margr1440\vieww18280\viewh14400\viewkind0
@@ -13,4 +13,4 @@
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/issues"}}{\fldrslt Issues}}\
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/discussions"}}{\fldrslt Discussions}}\
 {\field{\*\fldinst{HYPERLINK "https://twitter.com/mcbopomofo"}}{\fldrslt Twitter @mcbopomofo}}\
-}
\ No newline at end of file
+}
diff --git a/Source/en.lproj/Credits.rtf b/Source/en.lproj/Credits.rtf
index cfac32a8..9ac378aa 100644
--- a/Source/en.lproj/Credits.rtf
+++ b/Source/en.lproj/Credits.rtf
@@ -1,5 +1,5 @@
 {\rtf1\ansi\ansicpg1252\cocoartf2580
-\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 NotoSansCJKtc-Medium;}
+\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 system;}
 {\colortbl;\red255\green255\blue255;}
 {\*\expandedcolortbl;;}
 \margl1440\margr1440\vieww18280\viewh14400\viewkind0
@@ -13,4 +13,4 @@
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/issues"}}{\fldrslt Issues}}\
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/discussions"}}{\fldrslt Discussions}}\
 {\field{\*\fldinst{HYPERLINK "https://twitter.com/mcbopomofo"}}{\fldrslt Twitter @mcbopomofo}}\
-}
\ No newline at end of file
+}
diff --git a/Source/main.swift b/Source/main.swift
index 6defc4fd..e871588a 100644
--- a/Source/main.swift
+++ b/Source/main.swift
@@ -1,14 +1,4 @@
-//
-// main.swift
-//
-// Copyright (c) 2011 The McBopomofo Project.
-//
-// Contributors:
-//     Mengjuei Hsieh (@mjhsieh)
-//     Weizhong Yang (@zonble)
-//
-// Based on the Syrup Project and the Formosana Library
-// by Lukhnos Liu (@lukhnos).
+// Copyright (c) 2022 and onwards The McBopomofo Authors.
 //
 // Permission is hereby granted, free of charge, to any person
 // obtaining a copy of this software and associated documentation
@@ -30,7 +20,6 @@
 // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 // OTHER DEALINGS IN THE SOFTWARE.
-//
 
 import Cocoa
 import InputMethodKit
diff --git a/Source/zh-Hant.lproj/Credits.rtf b/Source/zh-Hant.lproj/Credits.rtf
index 2bd498d7..130c292b 100644
--- a/Source/zh-Hant.lproj/Credits.rtf
+++ b/Source/zh-Hant.lproj/Credits.rtf
@@ -1,5 +1,5 @@
 {\rtf1\ansi\ansicpg1252\cocoartf2580
-\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 NotoSansCJKtc-Medium;}
+\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fnil\fcharset136 system;}
 {\colortbl;\red255\green255\blue255;}
 {\*\expandedcolortbl;;}
 \margl1440\margr1440\vieww18280\viewh14400\viewkind0
@@ -13,4 +13,4 @@
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/issues"}}{\fldrslt \'b0\'dd\'c3\'44\'a6\'5e\'b3\'f8}}\
 {\field{\*\fldinst{HYPERLINK "https://github.com/openvanilla/McBopomofo/discussions"}}{\fldrslt \'b7\'4e\'a8\'a3\'b0\'51\'bd\'d7}}\
 {\field{\*\fldinst{HYPERLINK "https://twitter.com/mcbopomofo"}}{\fldrslt Twitter @mcbopomofo}}\
-}
\ No newline at end of file
+}