diff --git a/validate.go b/validate.go
index ceedbe6..2a63152 100644
--- a/validate.go
+++ b/validate.go
@@ -63,7 +63,7 @@ func Run(sourceData []byte, fieldList []StructField) ([]byte, error) {
 type handle struct {
 	sourceData       []byte
 	fieldList        []StructField
-	dynamicStruct    dynamicStructGenerate.Builder
+	dynamicStruct    dynamicStructGenerate.IBuilder
 	formatVal        string
 	parentFieldTable map[string]bool // 父级字段路径表
 }