diff --git a/drivers/multiple/Win32/gdisp_lld_Win32.c b/drivers/multiple/Win32/gdisp_lld_Win32.c
index 9f0bb397..7bb6d137 100644
--- a/drivers/multiple/Win32/gdisp_lld_Win32.c
+++ b/drivers/multiple/Win32/gdisp_lld_Win32.c
@@ -451,8 +451,8 @@ typedef struct winPriv {
 	#endif
 } winPriv;
 
-void gfxEmulatorSetParentWindow(HWND hwnd) {
-	hWndParent = hwnd;
+void gfxEmulatorSetParentWindow(void *hwnd) {
+	hWndParent = (HWND)hwnd;
 }
 
 #if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
diff --git a/drivers/multiple/Win32/gdisp_lld_config.h b/drivers/multiple/Win32/gdisp_lld_config.h
index 91891290..53f8bff7 100644
--- a/drivers/multiple/Win32/gdisp_lld_config.h
+++ b/drivers/multiple/Win32/gdisp_lld_config.h
@@ -51,7 +51,7 @@
 // Passing a NULL will reset window creation to creating top level windows.
 // Note: In order to affect any static displays it must be called BEFORE gfxInit().
 // Note: Creating a window under a parent causes the Mouse to be disabled by default (rather than enabled as for a top window)
-void gfxEmulatorSetParentWindow(HWND hwnd);
+void gfxEmulatorSetParentWindow(void *hwnd);
 
 #if GINPUT_NEED_MOUSE
 	// This function allows you to inject mouse events into the ugfx mouse driver