diff --git a/modules/juce_audio_devices/audio_io/juce_AudioDeviceManager.cpp b/modules/juce_audio_devices/audio_io/juce_AudioDeviceManager.cpp
index dd93f276b6..f81d3690ce 100644
--- a/modules/juce_audio_devices/audio_io/juce_AudioDeviceManager.cpp
+++ b/modules/juce_audio_devices/audio_io/juce_AudioDeviceManager.cpp
@@ -336,10 +336,10 @@ void AudioDeviceManager::insertDefaultDeviceNames (AudioDeviceSetup& setup) cons
 {
     if (auto* type = getCurrentDeviceTypeObject())
     {
-        if (setup.outputDeviceName.isEmpty())
+        if (numOutputChansNeeded > 0 && setup.outputDeviceName.isEmpty())
             setup.outputDeviceName = type->getDeviceNames (false) [type->getDefaultDeviceIndex (false)];
 
-        if (setup.inputDeviceName.isEmpty())
+        if (numInputChansNeeded > 0 && setup.inputDeviceName.isEmpty())
             setup.inputDeviceName = type->getDeviceNames (true) [type->getDefaultDeviceIndex (true)];
     }
 }