diff --git a/po/ja.po b/po/ja.po
index 5adf5f3c9e..3b7c2f8ccb 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -878,7 +878,7 @@ msgstr "X"
 #: gis_data_editor.php:175 gis_data_editor.php:197 gis_data_editor.php:243
 #: gis_data_editor.php:293 js/messages.php:287
 msgid "Y"
-msgstr ""
+msgstr "Y"
 
 #: gis_data_editor.php:202 gis_data_editor.php:246 gis_data_editor.php:296
 #: js/messages.php:294