diff --git a/po/ja.po b/po/ja.po
index 77fef59ad3..cfded56ac6 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -1615,7 +1615,7 @@ msgstr ""
 
 #: js/messages.php:199
 msgid "Sum of grouped rows:"
-msgstr "グループ後の件数："
+msgstr "グループ後の行数:"
 
 #: js/messages.php:200
 msgid "Total:"