diff --git a/client/packet.go b/client/packet.go
index 5a3902b7..2bee31fe 100644
--- a/client/packet.go
+++ b/client/packet.go
@@ -14,6 +14,8 @@ func (c *QQClient) uniPacket(command string, body []byte) (uint32, []byte) {
 		for _, signProvider := range c.signProvider {
 			if sign = signProvider(command, seq, body); sign == nil {
 				continue
+			} else {
+				break
 			}
 		}