diff --git a/src/Services/LogSystem/LogEntryExtraFormatter.php b/src/Services/LogSystem/LogEntryExtraFormatter.php
index 2950842b..8ec328d0 100644
--- a/src/Services/LogSystem/LogEntryExtraFormatter.php
+++ b/src/Services/LogSystem/LogEntryExtraFormatter.php
@@ -131,9 +131,9 @@ class LogEntryExtraFormatter
 
         if (($context instanceof LogWithEventUndoInterface) && $context->isUndoEvent()) {
             if ('undo' === $context->getUndoMode()) {
-                $array['log.undo_mode.undo'] = (string) $context->getUndoEventID();
+                $array['log.undo_mode.undo'] = '#' . $context->getUndoEventID();
             } elseif ('revert' === $context->getUndoMode()) {
-                $array['log.undo_mode.revert'] = (string) $context->getUndoEventID();
+                $array['log.undo_mode.revert'] = '#' . $context->getUndoEventID();
             }
         }
 
diff --git a/templates/log_system/details/log_details.html.twig b/templates/log_system/details/log_details.html.twig
index 422548a0..dbffd8c9 100644
--- a/templates/log_system/details/log_details.html.twig
+++ b/templates/log_system/details/log_details.html.twig
@@ -28,6 +28,10 @@
                 {% if log_entry.type == 'part_stock_changed' %}
                     ({{ ('log.part_stock_changed.' ~ log_entry.instockChangeType)|trans }})
                 {% endif %}
+
+                {% if log_entry is instanceof('App\\Entity\\Contracts\\LogWithEventUndoInterface') and log_entry.undoEvent %}
+                    <b>({{ ('log.undo_mode.' ~ log_entry.undoMode)|trans }}: <a href="{{ path('log_details', {"id": log_entry.UndoEventID}) }}">#{{ log_entry.UndoEventID }}</a>)</b>
+                {% endif %}
             </td>
         </tr>
         <tr>