diff --git a/qt5_src/Bootloader/MainWindow.cpp b/qt5_src/Bootloader/MainWindow.cpp
index f98cdec..ee75200 100644
--- a/qt5_src/Bootloader/MainWindow.cpp
+++ b/qt5_src/Bootloader/MainWindow.cpp
@@ -1169,7 +1169,7 @@ void MainWindow::GetQuery()
     }
 
     ui->lblDeviceBootloaderVer->setText(QString("%1").arg(extendedBootInfo.PIC18.bootloaderVersion, 4, 16, QChar('0')));
-    QString appVerMsg = (extendedBootInfo.PIC18.applicationVersion > 0) ?
+    QString appVerMsg = (extendedBootInfo.PIC18.applicationVersion != 0xffff) ?
                         QString("%1").arg(extendedBootInfo.PIC18.applicationVersion, 4, 16, QChar('0')) :
                         "No FW on device";
     ui->lblDeviceAppFWVer->setText(appVerMsg);