diff --git a/po/ja.po b/po/ja.po
index f52056eb06..dca3d47866 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -9569,7 +9569,7 @@ msgstr "グラフの題名"
 
 #: tbl_chart.php:99
 msgid "X-Axis:"
-msgstr ""
+msgstr "X 軸"
 
 #: tbl_chart.php:113
 #, fuzzy