diff --git a/client/src/models/List.js b/client/src/models/List.js
index 131c6146..8f9c6c6e 100755
--- a/client/src/models/List.js
+++ b/client/src/models/List.js
@@ -280,7 +280,20 @@ export default class extends BaseModel {
     if (filterUserIds.length > 0) {
       cardModels = cardModels.filter((cardModel) => {
         const users = cardModel.users.toRefArray();
-        return users.some((user) => filterUserIds.includes(user.id));
+
+        if (users.some((user) => filterUserIds.includes(user.id))) {
+          return true;
+        }
+
+        return cardModel
+          .getTaskListsQuerySet()
+          .toModelArray()
+          .some((taskListModel) =>
+            taskListModel
+              .getTasksQuerySet()
+              .toRefArray()
+              .some((task) => filterUserIds.includes(task.assigneeUserId)),
+          );
       });
     }
 
diff --git a/server/api/hooks/query-methods/models/Card.js b/server/api/hooks/query-methods/models/Card.js
index 9bf227e9..7e47f8c0 100644
--- a/server/api/hooks/query-methods/models/Card.js
+++ b/server/api/hooks/query-methods/models/Card.js
@@ -29,6 +29,8 @@ const getIdsByEndlessListId = async (
 
   if (filterUserIds) {
     query += ' JOIN card_membership ON card.id = card_membership.card_id';
+    query += ' JOIN task_list ON card.id = task_list.card_id';
+    query += ' JOIN task ON task_list.id = task.task_list_id';
   }
 
   if (filterLabelIds) {
@@ -84,6 +86,7 @@ const getIdsByEndlessListId = async (
     });
 
     query += ` AND card_membership.user_id IN (${inValues.join(', ')})`;
+    query += ` AND task.assignee_user_id IN (${inValues.join(', ')})`;
   }
 
   if (filterLabelIds) {