diff --git a/BizHawk.Client.Common/RomLoader.cs b/BizHawk.Client.Common/RomLoader.cs
index 99e355081e..6c7cac044f 100644
--- a/BizHawk.Client.Common/RomLoader.cs
+++ b/BizHawk.Client.Common/RomLoader.cs
@@ -987,7 +987,7 @@ namespace BizHawk.Client.Common
 								nextEmulator = new A7800Hawk(nextComm, game, rom.RomData, gamedbpath, GetCoreSettings<A7800Hawk>(), GetCoreSyncSettings<A7800Hawk>());
 								break;
 							case "C64":
-								var c64 = new C64(nextComm, Enumerable.Repeat(rom.RomData, 1), rom.GameInfo, GetCoreSettings<C64>(), GetCoreSyncSettings<C64>());
+								var c64 = new C64(nextComm, Enumerable.Repeat(rom.FileData, 1), rom.GameInfo, GetCoreSettings<C64>(), GetCoreSyncSettings<C64>());
 								nextEmulator = c64;
 								break;
 							case "GBA":
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000F.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000F.cs
index 755254ae39..320f92a9a3 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000F.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000F.cs
@@ -126,6 +126,8 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
 
 		public override void SyncState(Serializer ser)
 		{
+			ser.Sync("_bankMask", ref _bankMask);
+			ser.Sync("_bankNumber", ref _bankNumber);
 			base.SyncState(ser);
 			if (ser.IsReader)
 			{