1 files changed, 2 insertions, 2 deletions
diff --git a/src/serialport/qserialportinfo_unix.cpp b/src/serialport/qserialportinfo_unix.cpp
index 105d10af..7b967574 100644
--- a/src/serialport/qserialportinfo_unix.cpp
+++ b/src/serialport/qserialportinfo_unix.cpp
@@ -151,13 +151,13 @@ static bool isValidSerial8250(const QString &systemLocation)
     return false;
 }
 
-static bool isRfcommDevice(const QString &portName)
+static bool isRfcommDevice(QStringView portName)
 {
     if (!portName.startsWith(QLatin1String("rfcomm")))
         return false;
 
     bool ok;
-    const int portNumber = portName.midRef(6).toInt(&ok);
+    const int portNumber = portName.mid(6).toInt(&ok);
     if (!ok || (portNumber < 0) || (portNumber > 255))
         return false;
     return true;