diff --git a/rpcs3/Emu/Cell/SPUThread.h b/rpcs3/Emu/Cell/SPUThread.h
index 9c0baa5335..fa0dfd22d9 100644
--- a/rpcs3/Emu/Cell/SPUThread.h
+++ b/rpcs3/Emu/Cell/SPUThread.h
@@ -250,7 +250,7 @@ public:
 	}
 
 	// Write the FPSCR
-	void Write(u128 & r)
+	void Write(const u128 & r)
 	{
 		_u32[3] = r._u32[3] & 0x00000F07;
 		_u32[2] = r._u32[2] & 0x00003F07;