diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index d41cb1861..e7df0cc7e 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -161,8 +161,6 @@
     <string name="wrong_password">パスワードが間違っています</string>
     <string name="protect_application">アプリを保護する</string>
     <string name="check_for_updates">最新のアップデートを確認する</string>
-    <string name="app_name" translatable="false"/>
-    <string name="_empty" translatable="false"/>
     <string name="update_check_failed">アップデートを見つける事が出来ませんでした</string>
     <string name="no_update_available">利用可能なアップデートはありません</string>
     <string name="right_to_left">右から左(←)</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bbdd6db5a..2ae182b95 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
-    <string name="app_name" translatable="false">Kotatsu</string>
-    <string name="_empty" translatable="false"/>
     <string name="close_menu">Close menu</string>
     <string name="open_menu">Open menu</string>
     <string name="local_storage">Local storage</string>
@@ -168,7 +166,6 @@
     <string name="prefer_rtl_reader">Prefer right-to-left (→) reader</string>
     <string name="prefer_rtl_reader_summary">Reading mode can be set up separately for each series</string>
     <string name="create_category">New category</string>
-    <string name="report_github">Create issue on GitHub</string>
     <string name="scale_mode">Scale mode</string>
     <string name="zoom_mode_fit_center">Fit center</string>
     <string name="zoom_mode_fit_height">Fit to height</string>