diff --git a/Web/Util/DateTime.php b/Web/Util/DateTime.php
index 2bcb0f9d..464f10c9 100644
--- a/Web/Util/DateTime.php
+++ b/Web/Util/DateTime.php
@@ -31,7 +31,7 @@ class DateTime
             else
                 return $diff->i === 5 ? tr("time_exactly_five_minutes_ago") : tr("time_minutes_ago", $diff->i);
         } else if($this->timestamp >= strtotime("-1day midnight")) { # Yesterday
-            return tr("time_yesterday") . tr("time_at_sp") . ovk_strftime_safe("%X", $this->timestamp);
+            return tr("time_yesterday") . tr("time_at_sp") . ovk_strftime_safe(" %R %p", $this->timestamp);
         } else if(ovk_strftime_safe("%Y", $this->timestamp) === ovk_strftime_safe("%Y", time())) { # In this year
             return ovk_strftime_safe("%e %h ", $this->timestamp) . tr("time_at_sp") . ovk_strftime_safe(" %R %p", $this->timestamp);
         } else {