diff --git a/task/backend/bolt/bolt.go b/task/backend/bolt/bolt.go
index 41c78a8785..804dfb302e 100644
--- a/task/backend/bolt/bolt.go
+++ b/task/backend/bolt/bolt.go
@@ -283,21 +283,17 @@ func (s *Store) ListTasks(ctx context.Context, params backend.TaskSearchParams)
 		return nil, errors.New("ListTasks: org and user filters are mutually exclusive")
 	}
 
-	const (
-		defaultPageSize = 100
-		maxPageSize     = 500
-	)
 	if params.PageSize < 0 {
 		return nil, errors.New("ListTasks: PageSize must be positive")
 	}
-	if params.PageSize > maxPageSize {
-		return nil, fmt.Errorf("ListTasks: PageSize exceeds maximum of %d", maxPageSize)
+	if params.PageSize > platform.TaskMaxPageSize {
+		return nil, fmt.Errorf("ListTasks: PageSize exceeds maximum of %d", platform.TaskMaxPageSize)
 	}
 	lim := params.PageSize
 	if lim == 0 {
-		lim = defaultPageSize
+		lim = platform.TaskDefaultPageSize
 	}
-	taskIDs := make([]platform.ID, 0, params.PageSize)
+	taskIDs := make([]platform.ID, 0, lim)
 	var tasks []backend.StoreTaskWithMeta
 
 	if err := s.db.View(func(tx *bolt.Tx) error {
diff --git a/task/backend/inmem_store.go b/task/backend/inmem_store.go
index d8206aade1..57f174f72a 100644
--- a/task/backend/inmem_store.go
+++ b/task/backend/inmem_store.go
@@ -134,21 +134,16 @@ func (s *inmem) ListTasks(_ context.Context, params TaskSearchParams) ([]StoreTa
 		return nil, errors.New("ListTasks: org and user filters are mutually exclusive")
 	}
 
-	const (
-		defaultPageSize = 100
-		maxPageSize     = 500
-	)
-
 	if params.PageSize < 0 {
 		return nil, errors.New("ListTasks: PageSize must be positive")
 	}
-	if params.PageSize > maxPageSize {
-		return nil, fmt.Errorf("ListTasks: PageSize exceeds maximum of %d", maxPageSize)
+	if params.PageSize > platform.TaskMaxPageSize {
+		return nil, fmt.Errorf("ListTasks: PageSize exceeds maximum of %d", platform.TaskMaxPageSize)
 	}
 
 	lim := params.PageSize
 	if lim == 0 {
-		lim = defaultPageSize
+		lim = platform.TaskDefaultPageSize
 	}
 
 	out := make([]StoreTaskWithMeta, 0, lim)