diff --git a/po/ja.po b/po/ja.po
index 167a3007b6..41a883fd08 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -914,7 +914,7 @@ msgstr "新しいユーザを追加する"
 
 #: gis_data_editor.php:262 js/messages.php:290
 msgid "Polygon"
-msgstr ""
+msgstr "ポリゴン"
 
 #: gis_data_editor.php:300 js/messages.php:296
 #, fuzzy