diff --git a/lib/pleroma/language/translation/deepl.ex b/lib/pleroma/language/translation/deepl.ex
index 8ce1209cc3..0b56b35d73 100644
--- a/lib/pleroma/language/translation/deepl.ex
+++ b/lib/pleroma/language/translation/deepl.ex
@@ -80,6 +80,15 @@ def supported_languages(type) when type in [:source, :target] do
         languages =
           Jason.decode!(res.body)
           |> Enum.map(fn %{"language" => language} -> language |> String.downcase() end)
+          |> Enum.map(fn language ->
+            if String.contains?(language, "-") do
+              [language, language |> String.split("-") |> Enum.at(0)]
+            else
+              language
+            end
+          end)
+          |> List.flatten()
+          |> Enum.uniq()
 
         {:ok, languages}