diff --git a/src/device/DeviceManager.cpp b/src/device/DeviceManager.cpp
index c06a510..d0e8a67 100644
--- a/src/device/DeviceManager.cpp
+++ b/src/device/DeviceManager.cpp
@@ -241,13 +241,15 @@ void DeviceManager::scanProcess(int sProgress) {
             (scanPhase != 3)) ? "": ", patient can leave";
     QVariant var(QString("%1%3\r\n progress:%2%").arg(getPhaseName(scanPhase)).arg(progress).arg(extraMsg));
     TRIGGER_EVENT(InvokeOperationProgress, nullptr, (QObject *) &var);
+    // 300 means finished
+    if (sProgress == 300) return;
     //phase control
     //no change return
     if (scanPhase == phase) return;
     // error phase
     if (phase > 3 || scanPhase > phase) {
         QString errorMsg = QString("Error Scan Phase code, current Phase code:%1, new Phase code:%2!").arg(
-                scanPhase, phase);
+                scanPhase).arg(phase);
         THROW_ERROR(errorMsg)
         exitScanTimer();
         return;