diff --git a/models/workflow/workflow_mongo_accessor.go b/models/workflow/workflow_mongo_accessor.go
index 436bafc..ad1b376 100644
--- a/models/workflow/workflow_mongo_accessor.go
+++ b/models/workflow/workflow_mongo_accessor.go
@@ -93,10 +93,13 @@ func (wfa *workflowMongoAccessor) book(id string, realData *Workflow, execs []*w
 		return errors.New("no path found")
 	}
 	res, code, _ := wfa.LoadOne(id)
-	if code == 200 {
+	if code != 200 {
 		return errors.New("could not load workflow")
 	}
 	r := res.(*Workflow)
+	if realData.Schedule == nil && r.Schedule == nil {
+		return nil
+	}
 	g := r.Graph
 	if realData.Graph != nil {
 		g = realData.Graph