diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 556486ea496..25b3a3241ef 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -792,6 +792,15 @@ NTSTATUS WINAPI ObReferenceObjectByHandle( HANDLE obj, ACCESS_MASK access,
 }
 
 
+/***********************************************************************
+ *           ObfDereferenceObject   (NTOSKRNL.EXE.@)
+ */
+void WINAPI ObfDereferenceObject( VOID *obj )
+{
+    FIXME( "stub: %p\n", obj );
+}
+
+
 /***********************************************************************
  *           PsCreateSystemThread   (NTOSKRNL.EXE.@)
  */
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 3ac035e6e70..8f308a2fd61 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -48,7 +48,7 @@
 @ stub KefReleaseSpinLockFromDpcLevel
 @ stub KiAcquireSpinLock
 @ stub KiReleaseSpinLock
-@ stub ObfDereferenceObject
+@ stdcall ObfDereferenceObject(ptr)
 @ stub ObfReferenceObject
 @ stub RtlPrefetchMemoryNonTemporal
 @ cdecl -i386 -norelay RtlUlongByteSwap() ntdll.RtlUlongByteSwap