diff --git a/src/calibre/utils/formatter_functions.py b/src/calibre/utils/formatter_functions.py
index 89e0150693..bf160818c7 100644
--- a/src/calibre/utils/formatter_functions.py
+++ b/src/calibre/utils/formatter_functions.py
@@ -1389,7 +1389,9 @@ class BuiltinSeriesSort(BuiltinFormatterFunction):
 
     def evaluate(self, formatter, kwargs, mi, locals):
         if mi.series:
-            return title_sort(mi.series)
+            langs = mi.languages
+            lang = langs[0] if len(langs) > 0 else None
+            return title_sort(mi.series, lang=lang)
         return ''