diff --git a/tasks/views.py b/tasks/views.py
index c152ab4..aaf2547 100644
--- a/tasks/views.py
+++ b/tasks/views.py
@@ -43,9 +43,13 @@ def taskDetail(request, tool_slug, task_slug):
     context = {
         'tool': tool,
         'task': task,
-        'task_subs': task.grouptasksubscription_set.filter(group__user=request.user),
-        'tool_subs': tool.grouptoolsubscription_set.filter(group__user=request.user),
         'events': events,
         'form': form,
     }
+
+    if request.user.is_authenticated:
+        context.update({
+            'task_subs': task.grouptasksubscription_set.filter(group__user=request.user),
+            'tool_subs': tool.grouptoolsubscription_set.filter(group__user=request.user),
+        })
     return render(request, 'tasks/taskDetail.djhtml', context)