diff --git a/po/ja.po b/po/ja.po
index dcec81372f..08256239e9 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -9427,7 +9427,7 @@ msgstr "棒グラフ"
 
 #: tbl_chart.php:135
 msgid "Line"
-msgstr ""
+msgstr "折れ線グラフ"
 
 #: tbl_chart.php:136
 msgid "Radar"