diff --git a/import/OpenXDK/include/xboxkrnl/rtl.h b/import/OpenXDK/include/xboxkrnl/rtl.h
index 388a66011..096266764 100644
--- a/import/OpenXDK/include/xboxkrnl/rtl.h
+++ b/import/OpenXDK/include/xboxkrnl/rtl.h
@@ -431,7 +431,18 @@ XBSYSAPI EXPORTNUM(309) NTSTATUS NTAPI RtlUnicodeStringToInteger
 	IN     PULONG Value
 );
 
-XBSYSAPI VOID *RtlUnicodeToMultiByteN;
+// ******************************************************************
+// * 0x0136 - RtlUnicodeToMultiByteN()
+// ******************************************************************
+XBSYSAPI EXPORTNUM(310) NTSTATUS NTAPI RtlUnicodeToMultiByteN
+(
+	IN PCHAR MultiByteString,
+	IN ULONG MaxBytesInMultiByteString,
+	IN PULONG BytesInMultiByteString,
+	IN PWSTR UnicodeString,
+	IN ULONG BytesInUnicodeString
+);
+
 XBSYSAPI VOID *RtlUnicodeToMultiByteSize;
 XBSYSAPI VOID *RtlUnwind;
 XBSYSAPI VOID *RtlUpcaseUnicodeChar;
diff --git a/src/CxbxKrnl/EmuKrnlRtl.cpp b/src/CxbxKrnl/EmuKrnlRtl.cpp
index a26eb4df9..e73c9d97a 100644
--- a/src/CxbxKrnl/EmuKrnlRtl.cpp
+++ b/src/CxbxKrnl/EmuKrnlRtl.cpp
@@ -1023,6 +1023,36 @@ XBSYSAPI EXPORTNUM(309) xboxkrnl::NTSTATUS NTAPI xboxkrnl::RtlUnicodeStringToInt
 	RETURN(ret);
 }
 
+// ******************************************************************
+// * 0x0136 - RtlUnicodeToMultiByteN()
+// ******************************************************************
+XBSYSAPI EXPORTNUM(310) xboxkrnl::NTSTATUS NTAPI xboxkrnl::RtlUnicodeToMultiByteN
+(
+	IN PCHAR MultiByteString,
+	IN ULONG MaxBytesInMultiByteString,
+	IN PULONG BytesInMultiByteString,
+	IN PWSTR UnicodeString,
+	IN ULONG BytesInUnicodeString
+)
+{
+	LOG_FUNC_BEGIN
+		LOG_FUNC_ARG_OUT(MultiByteString)
+		LOG_FUNC_ARG(MaxBytesInMultiByteString)
+		LOG_FUNC_ARG(BytesInMultiByteString)
+		LOG_FUNC_ARG(UnicodeString)
+		LOG_FUNC_ARG(BytesInUnicodeString)
+		LOG_FUNC_END;
+
+	NTSTATUS ret = NtDll::RtlUnicodeToMultiByteN(
+		MultiByteString,
+		MaxBytesInMultiByteString,
+		BytesInMultiByteString,
+		UnicodeString,
+		BytesInUnicodeString);
+
+	RETURN(ret);
+}
+
 // Prevent errors compiling RtlZeroMemory (TODO : How should we really do this?)
 #undef RtlZeroMemory
 
diff --git a/src/CxbxKrnl/EmuNtDll.cpp b/src/CxbxKrnl/EmuNtDll.cpp
index 492297e84..67f547c2e 100644
--- a/src/CxbxKrnl/EmuNtDll.cpp
+++ b/src/CxbxKrnl/EmuNtDll.cpp
@@ -148,4 +148,5 @@ IMPORT(RtlTimeToTimeFields);
 IMPORT(RtlTryEnterCriticalSection);
 IMPORT(RtlUlongByteSwap);
 IMPORT(RtlUnicodeStringToAnsiString);
-IMPORT(RtlUnicodeStringToInteger);
+IMPORT(RtlUnicodeStringToInteger); 
+IMPORT(RtlUnicodeToMultiByteN);
diff --git a/src/CxbxKrnl/EmuNtDll.h b/src/CxbxKrnl/EmuNtDll.h
index 3302d5a15..fbd0de1ec 100644
--- a/src/CxbxKrnl/EmuNtDll.h
+++ b/src/CxbxKrnl/EmuNtDll.h
@@ -925,6 +925,18 @@ typedef NTSTATUS (NTAPI *FPTR_RtlUnicodeStringToInteger)
 	OUT PULONG           Value
 );
 
+// ******************************************************************
+// * RtlUnicodeToMultiByteN
+// ******************************************************************
+typedef NTSTATUS (NTAPI *FPTR_RtlUnicodeToMultiByteN)
+(
+	OUT PCHAR  MultiByteString,
+	IN  ULONG  MaxBytesInMultiByteString,
+	OUT PULONG BytesInMultiByteString OPTIONAL,
+	IN  PCWCH  UnicodeString,
+	IN  ULONG  BytesInUnicodeString
+);
+
 // ******************************************************************
 // * RtlCompareMemory
 // ******************************************************************
@@ -1889,6 +1901,7 @@ EXTERN(RtlTryEnterCriticalSection);
 EXTERN(RtlUlongByteSwap);
 EXTERN(RtlUnicodeStringToAnsiString);
 EXTERN(RtlUnicodeStringToInteger);
+EXTERN(RtlUnicodeToMultiByteN);
 
 #if defined(__cplusplus)
 }
diff --git a/src/CxbxKrnl/KernelThunk.cpp b/src/CxbxKrnl/KernelThunk.cpp
index b3c0fa48f..8b3acd80e 100644
--- a/src/CxbxKrnl/KernelThunk.cpp
+++ b/src/CxbxKrnl/KernelThunk.cpp
@@ -375,7 +375,7 @@ extern "C" CXBXKRNL_API uint32 CxbxKrnl_KernelThunkTable[379] =
 	(uint32)FUNC(&xboxkrnl::RtlUlongByteSwap),                // 0x0133 (307)
 	(uint32)FUNC(&xboxkrnl::RtlUnicodeStringToAnsiString),    // 0x0134 (308)
 	(uint32)FUNC(&xboxkrnl::RtlUnicodeStringToInteger),       // 0x0135 (309)
-	(uint32)PANIC(0x0136),                                    // 0x0136 (310) RtlUnicodeToMultiByteN
+	(uint32)FUNC(&xboxkrnl::RtlUnicodeToMultiByteN),          // 0x0136 (310)
 	(uint32)PANIC(0x0137),                                    // 0x0137 (311) RtlUnicodeToMultiByteSize
 	(uint32)PANIC(0x0138),                                    // 0x0138 (312) RtlUnwind
 	(uint32)PANIC(0x0139),                                    // 0x0139 (313) RtlUpcaseUnicodeChar