diff --git a/po/cs.po b/po/cs.po
index dfcd782a14..10ef7a6b6f 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -11581,7 +11581,7 @@ msgstr "Přejmenovat pohled na"
 
 #: po/advisory_rules.php:5
 msgid "Uptime below one day"
-msgstr ""
+msgstr "Server běží méně než den"
 
 #: po/advisory_rules.php:6
 msgid "Uptime is less than 1 day, performance tuning may not be accurate."