diff --git a/po/zh_TW.po b/po/zh_TW.po
index 9a5e834c25..a9e4c88d9e 100644
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -1913,7 +1913,7 @@ msgstr "未找到圖表所需資料。"
 
 #: libraries/chart.lib.php:249
 msgid "GD extension is needed for charts."
-msgstr ""
+msgstr "繪製圖表需要 GD 擴展。"
 
 #: libraries/chart.lib.php:252
 msgid "JSON encoder is needed for chart tooltips."