diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 13c8c7fd66d..e6706d85d11 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -837,6 +837,15 @@ NTSTATUS WINAPI IoRegisterShutdownNotification( PDEVICE_OBJECT obj )
 }
 
 
+/***********************************************************************
+ *           IoUnregisterShutdownNotification    (NTOSKRNL.EXE.@)
+ */
+VOID WINAPI IoUnregisterShutdownNotification( PDEVICE_OBJECT obj )
+{
+    FIXME( "stub: %p\n", obj );
+}
+
+
 /***********************************************************************
  *           IoReportResourceUsage    (NTOSKRNL.EXE.@)
  */
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index c90b45acfab..a391c813e2d 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -470,7 +470,7 @@
 @ stdcall IoUnregisterFileSystem(ptr)
 @ stub IoUnregisterFsRegistrationChange
 @ stub IoUnregisterPlugPlayNotification
-@ stub IoUnregisterShutdownNotification
+@ stdcall IoUnregisterShutdownNotification(ptr)
 @ stub IoUpdateShareAccess
 @ stub IoValidateDeviceIoControlAccess
 @ stub IoVerifyPartitionTable