diff --git a/rpcs3/Emu/RSX/VK/VKGSRender.cpp b/rpcs3/Emu/RSX/VK/VKGSRender.cpp
index 4a7bfe5384..8946c822c2 100644
--- a/rpcs3/Emu/RSX/VK/VKGSRender.cpp
+++ b/rpcs3/Emu/RSX/VK/VKGSRender.cpp
@@ -3581,6 +3581,7 @@ void VKGSRender::get_occlusion_query_result(rsx::reports::occlusion_query_info*
 	{
 		if (data.command_buffer_to_wait == m_current_command_buffer)
 		{
+			std::lock_guard lock(m_flush_queue_mutex);
 			flush_command_queue();
 
 			//Clear any deferred flush requests from previous call to get_query_status()