diff --git a/aleksis/apps/alsijil/templates/alsijil/partials/person_overview.html b/aleksis/apps/alsijil/templates/alsijil/partials/person_overview.html
index fce0fc3aacbd0ddc9eaa9bb5d7a7dddba394503e..a212a09736a743745101d9b270351fc6a840ab2a 100644
--- a/aleksis/apps/alsijil/templates/alsijil/partials/person_overview.html
+++ b/aleksis/apps/alsijil/templates/alsijil/partials/person_overview.html
@@ -104,7 +104,7 @@
       <td style="color: {{ absence_reason.colour }};">
         {{ participation.absence_reason.short_name }}
       </td>
-      <td>{{ participation.tardiness }}</td>
+      <td>{{ participation.tardiness|default_if_none:"" }}</td>
     </tr>
   {% endfor %}
   </tbody>