1 files changed, 1 insertions, 1 deletions
diff --git a/src/serialport/qserialport_win.cpp b/src/serialport/qserialport_win.cpp
index 562d59e5..3d9e98aa 100644
--- a/src/serialport/qserialport_win.cpp
+++ b/src/serialport/qserialport_win.cpp
@@ -987,7 +987,7 @@ bool QSerialPortPrivate::waitAnyEvent(int msecs, bool *timedOut,
     DWORD waitResult = ::WaitForMultipleObjects(handles.count(),
                                                 handles.constData(),
                                                 FALSE, // wait any event
-                                                qMax(msecs, 0));
+                                                msecs == -1 ? INFINITE : msecs);
     if (waitResult == WAIT_TIMEOUT) {
         *timedOut = true;
         q->setError(QSerialPort::TimeoutError);