diff --git a/__init__.py b/__init__.py
index 5231e4a..f5c6008 100644
--- a/__init__.py
+++ b/__init__.py
@@ -19,19 +19,18 @@
 
 from aqt.utils import tooltip
 from aqt.qt import *
-from aqt.editor import Editor
 
 from aqt import mw
 
 from anki.hooks import addHook
 
 from . import reading
-from . import config
+from .config import Config
 from .selection import Selection
 from .utils import removeFurigana
 
 mecab  = reading.MecabController()
-config = config.Config()
+config = Config()
 
 def setupGuiMenu():
     useRubyTags = QAction("Use ruby tags", mw, checkable=True, checked=config.getUseRubyTags())
diff --git a/config.py b/config.py
index 4210267..b5a202a 100644
--- a/config.py
+++ b/config.py
@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
 
+from aqt.addons import AbortAddonImport
 from aqt import mw
 
 def saveMe(func):
@@ -25,7 +26,11 @@ def wrapper(self, *args):
     return wrapper
 
 class Config:
-    data = mw.addonManager.getConfig(__name__)
+    def __init__(self):
+        if mw is None:
+            raise AbortAddonImport("No Anki main window?")
+
+        self.data = mw.addonManager.getConfig(__name__)
 
     def getUseRubyTags(self):
         return self.data['useRubyTags']
diff --git a/reading.py b/reading.py
index 76ca5e1..9e33544 100644
--- a/reading.py
+++ b/reading.py
@@ -1,13 +1,19 @@
 # -*- coding: utf-8 -*-
 
-# This file is based on the Japanese Support add-on's reading.py, which can be
-# found at <https://github.com/ankitects/anki-addons>.
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
 #
-# Copyright: Ankitects Pty Ltd and contributors
-# License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
 #
-# Automatic reading generation with mecab.
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
 #
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
 
 import sys
 import os
@@ -15,7 +21,7 @@
 import subprocess
 import platform
 
-from typing import Mapping, Optional, Union
+from typing import Any, Mapping, Optional, Union
 
 mecabArgs = ['--node-format=%m[%f[7]] ', '--eos-format=\n',
              '--unk-format=%m[] ']
@@ -57,7 +63,7 @@ def escapeText(text):
     except:
         si.dwFlags |= subprocess._subprocess.STARTF_USESHOWWINDOW
 else:
-    si = None
+    si: Optional[Any] = None
 
 # Syllabary utilities
 UNICODE_HIRAGANA_START = 0x3041
diff --git a/support/mecab.arm b/support/mecab.arm
old mode 100644
new mode 100755
diff --git a/test/test_reading.py b/test/test_reading.py
index b09dfa6..960db4b 100644
--- a/test/test_reading.py
+++ b/test/test_reading.py
@@ -1,3 +1,20 @@
+# -*- coding: utf-8 -*-
+
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import unittest
 
 import reading
diff --git a/test/test_utils.py b/test/test_utils.py
index 2a84f81..90e7d65 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1,3 +1,20 @@
+# -*- coding: utf-8 -*-
+
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import unittest
 
 import utils
diff --git a/utils.py b/utils.py
index a234da5..66f3838 100644
--- a/utils.py
+++ b/utils.py
@@ -1,5 +1,20 @@
 # -*- coding: utf-8 -*-
 
+# This file is part of Japanese Furigana <https://github.com/obynio/anki-japanese-furigana>.
+#
+# Japanese Furigana is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Japanese Furigana is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Japanese Furigana.  If not, see <http://www.gnu.org/licenses/>.
+
 import re
 
 def removeFurigana(text: str):