diff --git a/message/elements.go b/message/elements.go
index 6779f78c..1bd53d29 100644
--- a/message/elements.go
+++ b/message/elements.go
@@ -86,6 +86,10 @@ func NewAt(target int64, display ...string) *AtElement {
 	}
 }
 
+func AtAll() *AtElement {
+	return NewAt(0)
+}
+
 func (e *TextElement) Type() ElementType {
 	return Text
 }
diff --git a/message/message.go b/message/message.go
index 99cb899d..be940517 100644
--- a/message/message.go
+++ b/message/message.go
@@ -119,7 +119,12 @@ func ToProtoElems(elems []IMessageElement) (r []*msg.Elem) {
 						w.WriteUInt16(1)
 						w.WriteUInt16(0)
 						w.WriteUInt16(uint16(len(e.Display)))
-						w.WriteByte(0)
+						w.WriteByte(func() byte {
+							if e.Target == 0 {
+								return 1
+							}
+							return 0
+						}())
 						w.WriteUInt32(uint32(e.Target))
 						w.WriteUInt16(0)
 					}),