diff --git a/ultrasonic/build.gradle b/ultrasonic/build.gradle
index ba4ec15a..6b5c2cf2 100644
--- a/ultrasonic/build.gradle
+++ b/ultrasonic/build.gradle
@@ -14,7 +14,6 @@ android {
 
         minSdkVersion versions.minSdk
         targetSdkVersion versions.targetSdk
-        resConfigs 'cs', 'de', 'en', 'es', 'fr', 'hu', 'it', 'nl', 'pl', 'pt', 'pt-rBR', 'ru', 'zh-rCN', 'zh-rTW'
 
     }
 
diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/LocaleHelper.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/LocaleHelper.kt
index a9ffd06a..8c2e55ba 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/LocaleHelper.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/util/LocaleHelper.kt
@@ -23,7 +23,7 @@ class LocaleHelper(base: Context?) : ContextWrapper(base) {
             var context = ctx
             if (context != null && language != "") {
                 val config = context.resources.configuration
-                val locale = Locale(language)
+                val locale = Locale.forLanguageTag(language)
                 Locale.setDefault(locale)
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                     setSystemLocale(config, locale)
diff --git a/ultrasonic/src/main/res/values-b+de+DE+1901/strings.xml b/ultrasonic/src/main/res/values-b+de+DE+1901/strings.xml
new file mode 100644
index 00000000..4e2fb47b
--- /dev/null
+++ b/ultrasonic/src/main/res/values-b+de+DE+1901/strings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="main.artists_title">Interpreten</string>
+</resources>
\ No newline at end of file
diff --git a/ultrasonic/src/main/res/values/arrays.xml b/ultrasonic/src/main/res/values/arrays.xml
index e18377c2..c25f7f28 100644
--- a/ultrasonic/src/main/res/values/arrays.xml
+++ b/ultrasonic/src/main/res/values/arrays.xml
@@ -244,6 +244,7 @@
         <item>@string/language.en</item>
         <item>@string/language.fr</item>
         <item>@string/language.de</item>
+        <item>@string/language.de_DE_1901</item>
         <item>@string/language.hu</item>
         <item>@string/language.it</item>
         <item>@string/language.es</item>
@@ -262,12 +263,13 @@
         <item>en</item>
         <item>fr</item>
         <item>de</item>
+        <item>de-DE-1901</item>
         <item>hu</item>
         <item>it</item>
         <item>es</item>
         <item>pl</item>
         <item>pt</item>
-        <item>pt_br</item>
+        <item>pt-BR</item>
         <item>ru</item>
     </string-array>
 </resources>
\ No newline at end of file
diff --git a/ultrasonic/src/main/res/values/strings.xml b/ultrasonic/src/main/res/values/strings.xml
index e5ea9f70..da8e6403 100644
--- a/ultrasonic/src/main/res/values/strings.xml
+++ b/ultrasonic/src/main/res/values/strings.xml
@@ -103,6 +103,7 @@
     <string name="language.en">English</string>
     <string name="language.fr">French</string>
     <string name="language.de">German</string>
+    <string name="language.de_DE_1901">German (traditional)</string>
     <string name="language.hu">Hungarian</string>
     <string name="language.it">Italian</string>
     <string name="language.es">Spanish</string>