diff --git a/src/AudacityApp.cpp b/src/AudacityApp.cpp
index 5aaa1e4ce..df3fd429a 100644
--- a/src/AudacityApp.cpp
+++ b/src/AudacityApp.cpp
@@ -2025,6 +2025,8 @@ int AudacityApp::OnExit()
 
    DeinitFFT();
 
+   DeinitAudioIO();
+
    // Terminate the PluginManager (must be done before deleting the locale)
    PluginManager::Get().Terminate();
 
diff --git a/src/AudioIO.cpp b/src/AudioIO.cpp
index 5194eb5f8..c46061a04 100644
--- a/src/AudioIO.cpp
+++ b/src/AudioIO.cpp
@@ -943,6 +943,11 @@ void InitAudioIO()
    gPrefs->Flush();
 }
 
+void DeinitAudioIO()
+{
+   ugAudioIO.reset();
+}
+
 wxString DeviceName(const PaDeviceInfo* info)
 {
    wxString infoName = wxSafeConvertMB2WX(info->name);
diff --git a/src/AudioIO.h b/src/AudioIO.h
index 007f47f83..059d535e4 100644
--- a/src/AudioIO.h
+++ b/src/AudioIO.h
@@ -62,6 +62,7 @@ using WaveTrackArray = std::vector < WaveTrack* >;
 extern AUDACITY_DLL_API AudioIO *gAudioIO;
 
 void InitAudioIO();
+void DeinitAudioIO();
 wxString DeviceName(const PaDeviceInfo* info);
 wxString HostName(const PaDeviceInfo* info);
 bool ValidateDeviceNames();