diff --git a/hosts/dregil/configuration.nix b/hosts/dregil/configuration.nix
index 93a7b31..979de8f 100644
--- a/hosts/dregil/configuration.nix
+++ b/hosts/dregil/configuration.nix
@@ -37,7 +37,8 @@ in {
 
   i18n = {
     extraLocaleSettings = { TIME_STYLE = "iso"; };
-    supportedLocales = [ "C.UTF-8" "en_US.UTF-8" "de_DE.UTF8" ];
+    supportedLocales =
+      [ "C.UTF-8/UTF-8" "en_US.UTF-8/UTF-8" "de_DE.UTF-8/UTF-8" ];
   };
 
   console = {