diff --git a/library/datetime.po b/library/datetime.po
index ae13bec8e3..4c4aa0e9a7 100644
--- a/library/datetime.po
+++ b/library/datetime.po
@@ -247,7 +247,7 @@ msgstr "``d.tzinfo.utcoffset(d)`` 不會回傳 ``None``"
 
 #: ../../library/datetime.rst:179
 msgid "Otherwise, *d* is naive."
-msgstr ""
+msgstr "否則 *d* 會是 naive 的。"
 
 #: ../../library/datetime.rst:181
 msgid "A :class:`.time` object *t* is aware if both of the following hold:"