diff --git a/util/locale_database/qlocalexml2cpp.py b/util/locale_database/qlocalexml2cpp.py
index c6ccc431f66..60d0e692286 100755
--- a/util/locale_database/qlocalexml2cpp.py
+++ b/util/locale_database/qlocalexml2cpp.py
@@ -444,7 +444,7 @@ class CalendarDataWriter (LocaleSourceEditor):
                                 (locale.standaloneShortMonths, locale.shortMonths,
                                  locale.standaloneNarrowMonths, locale.narrowMonths)))
             except ValueError as e:
-                e.args += (locale.language, locale.script, locale.territory, stem)
+                e.args += (locale.language, locale.script, locale.territory)
                 raise
 
             self.writer.write(