3 files changed, 15 insertions, 3 deletions
diff --git a/src/bluetooth/qbluetoothdevicediscoveryagent.cpp b/src/bluetooth/qbluetoothdevicediscoveryagent.cpp
index b90f6b01..60af0e7e 100644
--- a/src/bluetooth/qbluetoothdevicediscoveryagent.cpp
+++ b/src/bluetooth/qbluetoothdevicediscoveryagent.cpp
@@ -40,9 +40,12 @@
 
 #include "qbluetoothdevicediscoveryagent.h"
 #include "qbluetoothdevicediscoveryagent_p.h"
+#include <QtCore/qloggingcategory.h>
 
 QT_BEGIN_NAMESPACE
 
+Q_DECLARE_LOGGING_CATEGORY(QT_BT)
+
 /*!
     \class QBluetoothDeviceDiscoveryAgent
     \inmodule QtBluetooth
@@ -253,8 +256,11 @@ void QBluetoothDeviceDiscoveryAgent::setLowEnergyDiscoveryTimeout(int timeout)
     Q_D(QBluetoothDeviceDiscoveryAgent);
 
     // cannot deliberately turn it off
-    if (d->lowEnergySearchTimeout < 0 || timeout < 0)
+    if (d->lowEnergySearchTimeout < 0 || timeout < 0) {
+        qCDebug(QT_BT) << "The Bluetooth Low Energy device discovery timeout cannot be negative "
+                          "or set on a backend which does not support this feature.";
         return;
+    }
 
     d->lowEnergySearchTimeout = timeout;
 }
diff --git a/src/bluetooth/qbluetoothdevicediscoveryagent_ios.mm b/src/bluetooth/qbluetoothdevicediscoveryagent_ios.mm
index f2611602..aac4f7d5 100644
--- a/src/bluetooth/qbluetoothdevicediscoveryagent_ios.mm
+++ b/src/bluetooth/qbluetoothdevicediscoveryagent_ios.mm
@@ -390,8 +390,11 @@ int QBluetoothDeviceDiscoveryAgent::lowEnergyDiscoveryTimeout() const
 void QBluetoothDeviceDiscoveryAgent::setLowEnergyDiscoveryTimeout(int timeout)
 {
     // cannot deliberately turn it off
-    if (d_ptr->lowEnergySearchTimeout < 0 || timeout < 0)
+    if (d_ptr->lowEnergySearchTimeout < 0 || timeout < 0) {
+        qCDebug(QT_BT_OSX) << "The Bluetooth Low Energy device discovery timeout cannot be negative "
+                              "or set on a backend which does not support this feature.";
         return;
+    }
 
     d_ptr->lowEnergySearchTimeout = timeout;
     return;
diff --git a/src/bluetooth/qbluetoothdevicediscoveryagent_osx.mm b/src/bluetooth/qbluetoothdevicediscoveryagent_osx.mm
index eedeebb5..48f84357 100644
--- a/src/bluetooth/qbluetoothdevicediscoveryagent_osx.mm
+++ b/src/bluetooth/qbluetoothdevicediscoveryagent_osx.mm
@@ -588,8 +588,11 @@ QString QBluetoothDeviceDiscoveryAgent::errorString() const
 void QBluetoothDeviceDiscoveryAgent::setLowEnergyDiscoveryTimeout(int timeout)
 {
     // cannot deliberately turn it off
-    if (d_ptr->lowEnergySearchTimeout < 0 || timeout < 0)
+    if (d_ptr->lowEnergySearchTimeout < 0 || timeout < 0) {
+        qCDebug(QT_BT_OSX) << "The Bluetooth Low Energy device discovery timeout cannot be negative "
+                              "or set on a backend which does not support this feature.";
         return;
+    }
 
     d_ptr->lowEnergySearchTimeout = timeout;
     return;