diff --git a/src/documents/serialisers.py b/src/documents/serialisers.py
index 273381106..494efb5c4 100644
--- a/src/documents/serialisers.py
+++ b/src/documents/serialisers.py
@@ -614,7 +614,7 @@ class TasksViewSerializer(serializers.ModelSerializer):
 
     def get_result(self, obj):
         result = ""
-        if hasattr(obj, "attempted_task"):
+        if hasattr(obj, "attempted_task") and obj.attempted_task:
             result = obj.attempted_task.result
         return result