diff --git a/import/OpenXDK/include/xboxkrnl/ob.h b/import/OpenXDK/include/xboxkrnl/ob.h
index ba68b5820..f078477cb 100644
--- a/import/OpenXDK/include/xboxkrnl/ob.h
+++ b/import/OpenXDK/include/xboxkrnl/ob.h
@@ -28,7 +28,17 @@ XBSYSAPI EXPORTNUM(239) NTSTATUS NTAPI ObCreateObject
 // ******************************************************************
 XBSYSAPI EXPORTNUM(240) OBJECT_TYPE ObDirectoryObjectType;
 
-XBSYSAPI VOID *ObInsertObject;
+// ******************************************************************
+// * 0x00F1 - ObInsertObject()
+// ******************************************************************
+XBSYSAPI EXPORTNUM(241) NTSTATUS NTAPI ObInsertObject
+(
+	IN PVOID Object,
+	IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL,
+	IN ULONG ObjectPointerBias,
+	OUT PHANDLE Handle
+);
+
 XBSYSAPI VOID *ObMakeTemporaryObject;
 
 XBSYSAPI EXPORTNUM(243) NTSTATUS NTAPI ObOpenObjectByName
diff --git a/src/CxbxKrnl/EmuKrnlOb.cpp b/src/CxbxKrnl/EmuKrnlOb.cpp
index 382080b12..14019159b 100644
--- a/src/CxbxKrnl/EmuKrnlOb.cpp
+++ b/src/CxbxKrnl/EmuKrnlOb.cpp
@@ -97,6 +97,29 @@ XBSYSAPI EXPORTNUM(240) xboxkrnl::OBJECT_TYPE xboxkrnl::ObDirectoryObjectType =
 	'eriD' // = first four characters of "Directory" in reverse
 };
 
+// ******************************************************************
+// * 0x00F1 - ObInsertObject()
+// ******************************************************************
+XBSYSAPI EXPORTNUM(241) xboxkrnl::NTSTATUS NTAPI xboxkrnl::ObInsertObject
+(
+	IN PVOID Object,
+	IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL,
+	IN ULONG ObjectPointerBias,
+	OUT PHANDLE Handle
+)
+{
+	LOG_FUNC_BEGIN
+		LOG_FUNC_ARG(Object)
+		LOG_FUNC_ARG(ObjectAttributes)
+		LOG_FUNC_ARG(ObjectPointerBias)
+		LOG_FUNC_ARG_OUT(Handle)
+		LOG_FUNC_END;
+
+	LOG_UNIMPLEMENTED();
+
+	RETURN(S_OK);
+}
+
 // ******************************************************************
 // * 0x00F3 - ObOpenObjectByName()
 // ******************************************************************
diff --git a/src/CxbxKrnl/KernelThunk.cpp b/src/CxbxKrnl/KernelThunk.cpp
index ad45a6885..4ed56b1bf 100644
--- a/src/CxbxKrnl/KernelThunk.cpp
+++ b/src/CxbxKrnl/KernelThunk.cpp
@@ -308,7 +308,7 @@ extern "C" CXBXKRNL_API uint32 CxbxKrnl_KernelThunkTable[379] =
 	(uint32)FUNC(&xboxkrnl::NtYieldExecution),                    // 0x00EE (238)
 	(uint32)FUNC(&xboxkrnl::ObCreateObject),                      // 0x00EF (239)
 	(uint32)VARIABLE(&xboxkrnl::ObDirectoryObjectType),           // 0x00F0 (240)
-	(uint32)PANIC(0x00F1),                                        // 0x00F1 (241) ObInsertObject
+	(uint32)FUNC(&xboxkrnl::ObInsertObject),                      // 0x00F1 (241)
 	(uint32)PANIC(0x00F2),                                        // 0x00F2 (242) ObMakeTemporaryObject 
 	(uint32)FUNC(&xboxkrnl::ObOpenObjectByName),                  // 0x00F3 (243)
 	(uint32)PANIC(0x00F4),                                        // 0x00F4 (244) ObOpenObjectByPointer