diff --git a/cmd/verysimple/main.go b/cmd/verysimple/main.go
index 69988b4..0795633 100644
--- a/cmd/verysimple/main.go
+++ b/cmd/verysimple/main.go
@@ -317,20 +317,21 @@ func mainFunc() (result int) {
 
 		//将@前缀的 回落dest配置 替换成 实际的 地址。
 
-		if len(standardConf.Fallbacks) != 0 {
+		if len(standardConf.Fallbacks) > 0 {
 			for _, fbConf := range standardConf.Fallbacks {
-				if fbConf.Dest != nil {
-					if deststr, ok := fbConf.Dest.(string); ok {
-						if strings.HasPrefix(deststr, "@") {
-							for _, s := range allServers {
-								if s.GetTag() == deststr[1:] {
-									log.Println("got tag fallback dest, will set to ", s.AddrStr())
-									fbConf.Dest = s.AddrStr()
-								}
-							}
+				if fbConf.Dest == nil {
+					continue
+				}
+				if deststr, ok := fbConf.Dest.(string); ok && strings.HasPrefix(deststr, "@") {
+					for _, s := range allServers {
+						if s.GetTag() == deststr[1:] {
+							log.Println("got tag fallback dest, will set to ", s.AddrStr())
+							fbConf.Dest = s.AddrStr()
 						}
 					}
+
 				}
+
 			}
 		}
 
diff --git a/httpLayer/fallback.go b/httpLayer/fallback.go
index 13e7696..8a77581 100644
--- a/httpLayer/fallback.go
+++ b/httpLayer/fallback.go
@@ -64,9 +64,8 @@ type Fallback interface {
 }
 
 type FallbackResult struct {
-	Addr  netLayer.Addr
-	Xver  int
-	ToTag string
+	Addr netLayer.Addr
+	Xver int
 }
 
 func (r *FallbackResult) GetFallback(ftype byte, _ ...string) *FallbackResult {
@@ -83,10 +82,11 @@ type FallbackConf struct {
 
 	Xver int `toml:"xver" json:"xver"` //use PROXY protocol or not, and which version
 
-	//必填
-	Dest any `toml:"dest" json:"dest"` //see netLayer.NewAddrFromAny for details about "any" addr
-
-	ToTag string `toml:"toTag" json:"toTag"` //有些回落 像 unix domain socket 的话，地址可能很长，写起来不方便，所以还是 写到 toTag 里比较简单 明了
+	//必填。
+	//see netLayer.NewAddrFromAny for details about "any" addr.
+	//
+	// 约定，如果该项是字符串 且 开头为@，则我们认为它给出的是 tag 名称，要将其替换为 实际 该tag的 listen  的地址。
+	Dest any `toml:"dest" json:"dest"`
 
 	//几种匹配方式，可选