diff --git a/src/CxbxKrnl/EmuKrnlRtl.cpp b/src/CxbxKrnl/EmuKrnlRtl.cpp
index 7e6da090a..7fff90bfd 100644
--- a/src/CxbxKrnl/EmuKrnlRtl.cpp
+++ b/src/CxbxKrnl/EmuKrnlRtl.cpp
@@ -496,3 +496,23 @@ XBSYSAPI EXPORTNUM(308) xboxkrnl::NTSTATUS NTAPI xboxkrnl::RtlUnicodeStringToAns
 	RETURN(ret);
 }
 
+// Prevent errors compiling RtlZeroMemory (TODO : How should we really do this?)
+#undef RtlZeroMemory
+
+// ******************************************************************
+// * 0x0140 - RtlZeroMemory
+// ******************************************************************
+XBSYSAPI EXPORTNUM(320) xboxkrnl::VOID NTAPI xboxkrnl::RtlZeroMemory
+(
+	IN VOID UNALIGNED  *Destination,
+	IN SIZE_T           Length
+)
+{
+	LOG_FUNC_BEGIN
+		LOG_FUNC_ARG(Destination)
+		LOG_FUNC_ARG(Length)
+		LOG_FUNC_END;
+
+	memset(Destination, 0, Length); // Don't bother with NtDll::RtlZeroMemory
+}
+
diff --git a/src/CxbxKrnl/KernelThunk.cpp b/src/CxbxKrnl/KernelThunk.cpp
index 221615a02..460d82684 100644
--- a/src/CxbxKrnl/KernelThunk.cpp
+++ b/src/CxbxKrnl/KernelThunk.cpp
@@ -385,7 +385,7 @@ extern "C" CXBXKRNL_API uint32 CxbxKrnl_KernelThunkTable[379] =
 	(uint32)PANIC(0x013D),                                    // 0x013D (317) RtlUpperString
 	(uint32)PANIC(0x013E),                                    // 0x013E (318) RtlUshortByteSwap
 	(uint32)PANIC(0x013F),                                    // 0x013F (319) RtlWalkFrameChain
-	(uint32)PANIC(0x0140),                                    // 0x0140 (320) RtlZeroMemory
+	(uint32)FUNC(&xboxkrnl::RtlZeroMemory),                   // 0x0140 (320)
 	(uint32)VARIABLE(&xboxkrnl::XboxEEPROMKey),               // 0x0141 (321)
 	(uint32)VARIABLE(&xboxkrnl::XboxHardwareInfo),            // 0x0142 (322)
 	(uint32)VARIABLE(&xboxkrnl::XboxHDKey),                   // 0x0143 (323)