diff --git a/taskapp/templates/taskapp/tasklist_all.html b/taskapp/templates/taskapp/tasklist_all.html
index 652efcc..6878c2a 100644
--- a/taskapp/templates/taskapp/tasklist_all.html
+++ b/taskapp/templates/taskapp/tasklist_all.html
@@ -58,8 +58,12 @@
 
                 <td>{{ task.get_mode_display }}</td>
                 <td>{{ task.descr }}</td>
-                <td><a href="{% url 'acc_app:other_profile' task.author.pk %}"
-                       title="{{ task.author.get_full_name }}">{{ task.author.username }}</a></td>
+		<td>{% if task.author %}
+			<a href="{% url 'acc_app:other_profile' task.author.pk %}" title="{{ task.author.get_full_name }}">{{ task.author.username }}</a>
+		    {% else %}
+		        {% trans 'Not assigned' %}
+		    {% endif %}
+		</td>
                 <td>{{ task.get_state_display }}</td>
                 <td>{{ task.time_of_create|date:'d N Y H:i:s' }}</td>