diff --git a/guest-overlay/files/provision/gast/.config/plasma-locale-settings.sh b/guest-overlay/files/provision/gast/.config/plasma-locale-settings.sh
index 20715a545ec216e8b0e7f3c046856f789e6df96e..9ab8aa19827b0150781dbaa7943bb3a068647532 100644
--- a/guest-overlay/files/provision/gast/.config/plasma-locale-settings.sh
+++ b/guest-overlay/files/provision/gast/.config/plasma-locale-settings.sh
@@ -2,5 +2,5 @@
 # Exports language-format specific env vars from startkde.
 # This script has been generated from kcmshell5 formats.
 # It will automatically be overwritten from there.
-export LANG=nds_DE.UTF-8
+export LANG=de_DE.UTF-8
 export LANGUAGE=de
diff --git a/guest-overlay/files/provision/gast/.config/plasma-localerc b/guest-overlay/files/provision/gast/.config/plasma-localerc
index e711ff5b9fed6c28527de5e43ad04c8d1f391727..b7f453c09869d34fa00fd162ce9cedcb0b46cac6 100644
--- a/guest-overlay/files/provision/gast/.config/plasma-localerc
+++ b/guest-overlay/files/provision/gast/.config/plasma-localerc
@@ -1,5 +1,5 @@
 [Formats]
-LANG=nds_DE.UTF-8
+LANG=de_DE.UTF-8
 
 [Translations]
 LANGUAGE=de