diff --git a/func/Module_SA_label_v2.py b/func/Module_SA_label_v2.py
index e393c24..7bbc6fd 100644
--- a/func/Module_SA_label_v2.py
+++ b/func/Module_SA_label_v2.py
@@ -1937,7 +1937,7 @@ class MainWindow_SA_label(QMainWindow):
         elif start + value + self.config["WindowSignalSecond"] > self.config["SignalSecond"]:
             PublicFunc.msgbox_output(self, "已到达信号末尾，无法继续前进！", Constants.MSGBOX_TYPE_WARNING)
             PublicFunc.text_output(self.ui, "已到达信号末尾，无法继续前进！", Constants.TIPS_TYPE_ERROR)
-            return start - self.config["WindowSignalSecond"], self.config["SignalSecond"]
+            return self.config["SignalSecond"] - self.config["WindowSignalSecond"], self.config["SignalSecond"]
         else:
             return start + value, start + value + self.config["WindowSignalSecond"]