diff --git a/message/message.go b/message/message.go
index fba953a7..3920c4fb 100644
--- a/message/message.go
+++ b/message/message.go
@@ -248,7 +248,7 @@ func (msg *SendingMessage) ToFragmented() [][]IMessageElement {
 func EstimateLength(elems []IMessageElement, limit int) int {
 	sum := 0
 	for _, elem := range elems {
-		if sum >= limit {
+		if sum > limit {
 			break
 		}
 		left := int(math.Max(float64(limit-sum), 0))
diff --git a/utils/string.go b/utils/string.go
index ad9803b7..48703a74 100644
--- a/utils/string.go
+++ b/utils/string.go
@@ -55,7 +55,7 @@ func ChineseLength(str string, limit int) int {
 		default:
 			sum += 4
 		}
-		if sum >= limit {
+		if sum > limit {
 			break
 		}
 	}