diff --git a/workflow_builder/argo_builder.go b/workflow_builder/argo_builder.go
index 8da03b8..be184b5 100644
--- a/workflow_builder/argo_builder.go
+++ b/workflow_builder/argo_builder.go
@@ -160,7 +160,7 @@ func (b *ArgoBuilder) createNginxVolumes() {
 
 func (b *ArgoBuilder) getDependency(current_computing_id string) (dependencies []string) {
 	for _, link := range b.OriginWorkflow.Graph.Links {
-		if !b.IsProcessing(link.Source.ID) {
+		if b.OriginWorkflow.Graph.Items[link.Source.ID].Processing == nil {
 			continue
 		}
 		source := b.OriginWorkflow.Graph.Items[link.Source.ID].Processing