diff --git a/management/univention-directory-manager-modules/modules/univention/admin/syntax.py b/management/univention-directory-manager-modules/modules/univention/admin/syntax.py
index af4a251ee7..7eac38592f 100644
--- a/management/univention-directory-manager-modules/modules/univention/admin/syntax.py
+++ b/management/univention-directory-manager-modules/modules/univention/admin/syntax.py
@@ -1377,6 +1377,9 @@ class date2(date):  # fixes the century
 		if text and self._re_de.match(text):
 			day, month, year = map(lambda(x): int(x), text.split('.'))
 			if 0 <= year <= 99 and 1 <= month <= 12 and 1 <= day <= 31:
+				## Workaround for 2.1.1970: don't wrap to 2070:
+				if year >= 39: # Everything after that has the 2038 problem anyway
+					return '19%02d-%02d-%02d' % (year, month, day)
 				return '20%02d-%02d-%02d' % (year, month, day)
 		raise univention.admin.uexceptions.valueError(_("Not a valid Date"))