diff --git a/client/SDL/SDL3/sdl_freerdp.cpp b/client/SDL/SDL3/sdl_freerdp.cpp
index 205c72625..9d3e09064 100644
--- a/client/SDL/SDL3/sdl_freerdp.cpp
+++ b/client/SDL/SDL3/sdl_freerdp.cpp
@@ -364,6 +364,7 @@ static BOOL sdl_draw_to_window(SdlContext* sdl, SdlWindow& window,
 
 	auto size = window.rect();
 
+	std::unique_lock lock(sdl->critical);
 	auto surface = sdl->primary.get();
 	if (freerdp_settings_get_bool(context->settings, FreeRDP_SmartSizing))
 	{
@@ -495,7 +496,7 @@ static BOOL sdl_desktop_resize(rdpContext* context)
 	settings = context->settings;
 	WINPR_ASSERT(settings);
 
-	std::scoped_lock lock(sdl->critical);
+	std::unique_lock lock(sdl->critical);
 	gdi = context->gdi;
 	if (!gdi_resize(gdi, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
 	                freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight)))
@@ -644,7 +645,7 @@ static void sdl_cleanup_sdl(SdlContext* sdl)
 	if (!sdl)
 		return;
 
-	std::scoped_lock lock(sdl->critical);
+	std::unique_lock lock(sdl->critical);
 	sdl->windows.clear();
 	sdl->dialog.destroy();
 
@@ -763,7 +764,7 @@ static BOOL sdl_wait_create_windows(SdlContext* sdl)
 
 static bool shall_abort(SdlContext* sdl)
 {
-	std::scoped_lock lock(sdl->critical);
+	std::unique_lock lock(sdl->critical);
 	if (freerdp_shall_disconnect_context(sdl->context()))
 	{
 		if (sdl->rdp_thread_running)
@@ -833,7 +834,7 @@ static int sdl_run(SdlContext* sdl)
 			             sdl_event_type_str(windowEvent.type), windowEvent.type);
 #endif
 			{
-				std::scoped_lock lock(sdl->critical);
+				std::unique_lock lock(sdl->critical);
 				/* The session might have been disconnected while we were waiting for a
 				 * new SDL event. In that case ignore the SDL event and terminate. */
 				if (freerdp_shall_disconnect_context(sdl->context()))