diff --git a/Source/Core/Core/HW/SI_GCAdapter.cpp b/Source/Core/Core/HW/SI_GCAdapter.cpp
index b54c07ef74..9b4482c452 100644
--- a/Source/Core/Core/HW/SI_GCAdapter.cpp
+++ b/Source/Core/Core/HW/SI_GCAdapter.cpp
@@ -146,6 +146,7 @@ void Init()
 	if (ret)
 	{
 		ERROR_LOG(SERIALINTERFACE, "libusb_init failed with error: %d", ret);
+		s_libusb_driver_not_supported = true;
 		Shutdown();
 	}
 	else
diff --git a/Source/Core/DolphinWX/ControllerConfigDiag.cpp b/Source/Core/DolphinWX/ControllerConfigDiag.cpp
index ff5bafc44e..170439f1f5 100644
--- a/Source/Core/DolphinWX/ControllerConfigDiag.cpp
+++ b/Source/Core/DolphinWX/ControllerConfigDiag.cpp
@@ -174,6 +174,7 @@ wxStaticBoxSizer* ControllerConfigDiag::CreateGamecubeSizer()
 			m_adapter_status->SetLabelText(_("Driver Not Detected"));
 			gamecube_adapter->Disable();
 			gamecube_adapter->SetValue(false);
+			gamecube_rumble->Disable();
 		}
 	}
 	else
diff --git a/Source/Core/DolphinWX/ControllerConfigDiag.h b/Source/Core/DolphinWX/ControllerConfigDiag.h
index 5fa2c0f52e..3c6582a5e1 100644
--- a/Source/Core/DolphinWX/ControllerConfigDiag.h
+++ b/Source/Core/DolphinWX/ControllerConfigDiag.h
@@ -73,6 +73,10 @@ private:
 	void OnGameCubeAdapter(wxCommandEvent& event)
 	{
 		SConfig::GetInstance().m_GameCubeAdapter = event.IsChecked();
+		if (event.IsChecked())
+			SI_GCAdapter::StartScanThread();
+		else
+			SI_GCAdapter::StopScanThread();
 		event.Skip();
 	}
 	void OnAdapterRumble(wxCommandEvent& event)