diff --git a/Source/Core/InputCommon/ControllerInterface/Win32/Win32.cpp b/Source/Core/InputCommon/ControllerInterface/Win32/Win32.cpp
index 2e69fc80e6..79584913cf 100644
--- a/Source/Core/InputCommon/ControllerInterface/Win32/Win32.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/Win32/Win32.cpp
@@ -10,8 +10,6 @@
 
 #include <hidclass.h>
 
-#include <mutex>
-
 #include "Common/Flag.h"
 #include "Common/Logging/Log.h"
 #include "InputCommon/ControllerInterface/DInput/DInput.h"
@@ -20,7 +18,6 @@
 
 #pragma comment(lib, "OneCoreUAP.Lib")
 
-static std::mutex s_populate_mutex;
 // TODO is this really needed?
 static Common::Flag s_first_populate_devices_asked;
 static HCMNOTIFICATION s_notify_handle;
@@ -52,7 +49,6 @@ _Pre_satisfies_(EventDataSize >= sizeof(CM_NOTIFY_EVENT_DATA)) static DWORD CALL
     // listen for it.
     if (s_first_populate_devices_asked.IsSet())
     {
-      std::lock_guard lk_population(s_populate_mutex);
       // TODO: we could easily use the message passed alongside this event, which tells
       // whether a device was added or removed, to avoid removing old, still connected, devices
       g_controller_interface.PlatformPopulateDevices([&] {
@@ -96,17 +92,18 @@ InputBackend::InputBackend(ControllerInterface* controller_interface)
 
 void InputBackend::PopulateDevices()
 {
-  std::lock_guard lk_population(s_populate_mutex);
-  s_first_populate_devices_asked.Set();
-  ciface::DInput::PopulateDevices(GetHWND());
-  ciface::XInput::PopulateDevices();
-  ciface::WGInput::PopulateDevices();
+  g_controller_interface.PlatformPopulateDevices([this] {
+    s_first_populate_devices_asked.Set();
+    ciface::DInput::PopulateDevices(GetHWND());
+    ciface::XInput::PopulateDevices();
+    ciface::WGInput::PopulateDevices();
+  });
 }
 
 void InputBackend::HandleWindowChange()
 {
-  std::lock_guard lk_population(s_populate_mutex);
-  ciface::DInput::ChangeWindow(GetHWND());
+  g_controller_interface.PlatformPopulateDevices(
+      [this] { ciface::DInput::ChangeWindow(GetHWND()); });
 }
 
 InputBackend::~InputBackend()