diff --git a/reactos/ntoskrnl/mm/mm.c b/reactos/ntoskrnl/mm/mm.c
index 8c272ff6726..c02f0f944e0 100644
--- a/reactos/ntoskrnl/mm/mm.c
+++ b/reactos/ntoskrnl/mm/mm.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: mm.c,v 1.70 2004/04/08 20:05:08 jfilby Exp $
+/* $Id: mm.c,v 1.71 2004/04/08 20:27:10 jfilby Exp $
  *
  * COPYRIGHT:   See COPYING in the top directory
  * PROJECT:     ReactOS kernel 
@@ -118,12 +118,11 @@ NTSTATUS MmReleaseMmInfo(PEPROCESS Process)
 }
 
 /*
- * @unimplemented
+ * @implemented
  */
 BOOLEAN STDCALL MmIsNonPagedSystemAddressValid(PVOID VirtualAddress)
 {
-   UNIMPLEMENTED;
-   return FALSE;
+   return MmIsAddressValid(VirtualAddress);
 }
 
 /*
@@ -156,6 +155,7 @@ BOOLEAN STDCALL MmIsAddressValid(PVOID VirtualAddress)
    MmLockAddressSpace(AddressSpace);
    MemoryArea = MmOpenMemoryAreaByAddress(AddressSpace,
                       VirtualAddress);
+DbgPrint("validating: MemoryArea: %08x\n", MemoryArea);
    
    if (MemoryArea == NULL || MemoryArea->DeleteInProgress)
      {