diff --git a/relay/adaptor/vertexai/adaptor.go b/relay/adaptor/vertexai/adaptor.go
index 03e1fc7d..68d2e875 100644
--- a/relay/adaptor/vertexai/adaptor.go
+++ b/relay/adaptor/vertexai/adaptor.go
@@ -38,7 +38,7 @@ func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *model.G
 }
 
 func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, meta *meta.Meta) (usage *model.Usage, err *model.ErrorWithStatusCode) {
-	adaptor := GetAdaptor(meta.OriginModelName)
+	adaptor := GetAdaptor(meta.ActualModelName)
 	if adaptor == nil {
 		return nil, &relaymodel.ErrorWithStatusCode{
 			StatusCode: http.StatusInternalServerError,