diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
index 598697cb5a..6e3386a80d 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
@@ -498,11 +498,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 			else if (addr < 0x4000)
 			{
-				ret = ppu.ReadReg(addr & 7);
+				ret = ppu.PeekReg(addr & 7);
 			}
 			else if (addr < 0x4020)
 			{
-				ret = ReadReg(addr); //we're not rebasing the register just to keep register names canonical
+				ret = PeekReg(addr); //we're not rebasing the register just to keep register names canonical
 			}
 			else
 			{
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
index ee24609f9f..6950e57a3c 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/NES.cs
@@ -403,7 +403,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			var RAM = new MemoryDomain("RAM", 0x800, MemoryDomain.Endian.Little,
 				addr => ram[addr], (addr, value) => ram[addr] = value);
 			var SystemBus = new MemoryDomain("System Bus", 0x10000, MemoryDomain.Endian.Little,
-				addr => ReadMemory((ushort)addr), (addr, value) => ApplySystemBusPoke(addr, value));
+				addr => PeekMemory((ushort)addr), (addr, value) => ApplySystemBusPoke(addr, value));
 			var PPUBus = new MemoryDomain("PPU Bus", 0x4000, MemoryDomain.Endian.Little,
 				addr => ppu.ppubus_peek(addr), (addr, value) => ppu.ppubus_write(addr, value));
 			var CIRAMdomain = new MemoryDomain("CIRAM (nametables)", 0x800, MemoryDomain.Endian.Little,