diff --git a/pandora_console/operation/events/events.php b/pandora_console/operation/events/events.php
index b3d4b52377..639f4bcd04 100644
--- a/pandora_console/operation/events/events.php
+++ b/pandora_console/operation/events/events.php
@@ -464,7 +464,7 @@ if (is_ajax() === true) {
                         $tmp->ack_utimestamp_raw = strtotime($tmp->ack_utimestamp);
 
                         $tmp->ack_utimestamp = ui_print_timestamp(
-                            $tmp->ack_utimestamp,
+                            (int) $tmp->ack_utimestamp,
                             true
                         );
                         $tmp->timestamp = ui_print_timestamp(