diff --git a/Processors/6502/CPU6502.hpp b/Processors/6502/CPU6502.hpp
index 6356045ae..7d774f8ad 100644
--- a/Processors/6502/CPU6502.hpp
+++ b/Processors/6502/CPU6502.hpp
@@ -638,7 +638,7 @@ template <class T> class Processor {
 						const MicroOp cycle = program[scheduleProgramProgramCounter];
 						scheduleProgramProgramCounter++;
 
-#define read_op(val, addr)		nextBusOperation = BusOperation::ReadOpcode;	busAddress = addr;		busValue = &val
+#define read_op(val, addr)		nextBusOperation = BusOperation::ReadOpcode;	busAddress = addr;		busValue = &val;				val = 0xff
 #define read_mem(val, addr)		nextBusOperation = BusOperation::Read;			busAddress = addr;		busValue = &val;				val	= 0xff
 #define throwaway_read(addr)	nextBusOperation = BusOperation::Read;			busAddress = addr;		busValue = &throwaway_target;	throwaway_target = 0xff
 #define write_mem(val, addr)	nextBusOperation = BusOperation::Write;			busAddress = addr;		busValue = &val