diff --git a/rpcs3/Emu/RSX/VK/VKRenderTargets.cpp b/rpcs3/Emu/RSX/VK/VKRenderTargets.cpp
index 8eaef46bb83e..632b17431802 100644
--- a/rpcs3/Emu/RSX/VK/VKRenderTargets.cpp
+++ b/rpcs3/Emu/RSX/VK/VKRenderTargets.cpp
@@ -223,7 +223,7 @@ namespace vk
 		subres.height_in_block = subres.height_in_texel = surface_height * samples_y;
 		subres.pitch_in_block = rsx_pitch / get_bpp();
 		subres.depth = 1;
-		subres.data = { vm::get_super_ptr<const std::byte>(base_addr), static_cast<std::span<const std::byte>::index_type>(rsx_pitch * surface_height * samples_y) };
+		subres.data = { vm::get_super_ptr<const std::byte>(base_addr), static_cast<std::span<const std::byte>::size_type>(rsx_pitch * surface_height * samples_y) };
 
 		if (g_cfg.video.resolution_scale_percent == 100 && spp == 1) [[likely]]
 		{