diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 53a1bcdd22b..d7f57bad206 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -939,6 +939,8 @@ static void unload_driver( struct wine_rb_entry *entry, void *context )
     CloseServiceHandle( (void *)service_handle );
 }
 
+PEPROCESS PsInitialSystemProcess = NULL;
+
 /***********************************************************************
  *           wine_ntoskrnl_main_loop   (Not a Windows API)
  */
@@ -952,6 +954,8 @@ NTSTATUS CDECL wine_ntoskrnl_main_loop( HANDLE stop_event )
     void *in_buff = NULL;
     HANDLE handles[2];
 
+    /* Set the system process global before setting up the request thread trickery  */
+    PsInitialSystemProcess = IoGetCurrentProcess();
     request_thread = GetCurrentThreadId();
 
     handles[0] = stop_event;
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 633a8c4b6c3..7a802068a1a 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -906,7 +906,7 @@
 @ stub PsGetThreadWin32Thread
 @ stdcall PsGetVersion(ptr ptr ptr ptr)
 @ stdcall PsImpersonateClient(ptr ptr long long long)
-@ stub PsInitialSystemProcess
+@ extern PsInitialSystemProcess
 @ stub PsIsProcessBeingDebugged
 @ stub PsIsSystemThread
 @ stub PsIsThreadImpersonating