diff --git a/api/controller/Public.go b/api/controller/Public.go
index 1d30f8d..4cd1591 100644
--- a/api/controller/Public.go
+++ b/api/controller/Public.go
@@ -355,7 +355,7 @@ func (b *Public) GetOssSign(c *gin.Context) {
 	}
 
 	// 获取oss签名
-	dir := "base/class/"
+	dir := "basic/class/"
 
 	// 生成签名
 	ossSign, err := aliyun.GetOssSign(dir)