diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Parse.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Parse.cs
index af86811337..68639f8f10 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Parse.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Parse.cs
@@ -119,11 +119,13 @@
 					}
 					else
 					{
-						_parseSrData0 = _bitmapMode ? 0 : _dataG;
-						_parseSrData1 = _dataG;
+						_parseSrData0 = _parseSrData1 = _dataG;
 					}
 					_srData1 |= _parseSrData1 << _parseSrShift;
 
+					if (_bitmapMode && !_multicolorMode)
+						_parseSrData1 ^= 0xFF;
+
 					// graphics color shift register
 					_srColor0 &= ~(0xFF << _parseSrShift);
 					_srColor1 &= ~(0xFF << _parseSrShift);