diff --git a/rpcs3/Emu/RSX/D3D12/D3D12GSRender.cpp b/rpcs3/Emu/RSX/D3D12/D3D12GSRender.cpp
index ba31947759..8ac0a0d2a0 100644
--- a/rpcs3/Emu/RSX/D3D12/D3D12GSRender.cpp
+++ b/rpcs3/Emu/RSX/D3D12/D3D12GSRender.cpp
@@ -1483,7 +1483,7 @@ void D3D12GSRender::semaphorePFIFOAcquire(u32 offset, u32 value)
 	const std::chrono::time_point<std::chrono::system_clock> enterWait = std::chrono::system_clock::now();
 	while (true)
 	{
-		u32 val = vm::read32(m_label_addr + offset);
+		volatile u32 val = vm::read32(m_label_addr + offset);
 		if (val == value) break;
 		std::chrono::time_point<std::chrono::system_clock> waitPoint = std::chrono::system_clock::now();
 		long long elapsedTime = std::chrono::duration_cast<std::chrono::seconds>(waitPoint - enterWait).count();