diff --git a/include/dos_inc.h b/include/dos_inc.h
index 152afd0a..4f46a970 100644
--- a/include/dos_inc.h
+++ b/include/dos_inc.h
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_inc.h,v 1.72 2007-11-18 10:30:11 c2woody Exp $ */
+/* $Id: dos_inc.h,v 1.73 2008-01-21 21:26:49 qbix79 Exp $ */
 
 #ifndef DOSBOX_DOS_INC_H
 #define DOSBOX_DOS_INC_H
@@ -502,6 +502,7 @@ public:
 	bool Extended(void);
 	void GetAttr(Bit8u & attr);
 	void SetAttr(Bit8u attr);
+	bool Valid(void);
 private:
 	bool extended;
 	PhysPt real_pt;
diff --git a/src/dos/dos_classes.cpp b/src/dos/dos_classes.cpp
index fa648bc2..81364b6e 100644
--- a/src/dos/dos_classes.cpp
+++ b/src/dos/dos_classes.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_classes.cpp,v 1.53 2007-11-07 22:08:03 c2woody Exp $ */
+/* $Id: dos_classes.cpp,v 1.54 2008-01-21 21:26:49 qbix79 Exp $ */
 
 #include <string.h>
 #include <stdlib.h>
@@ -472,6 +472,12 @@ void DOS_FCB::FileOpen(Bit8u _fhandle) {
 	sSave(sFCB,date,Files[temp]->date);
 }
 
+bool DOS_FCB::Valid() {
+	//Very simple check for Oubliette
+	if(sGet(sFCB,filename[0]) == 0 && sGet(sFCB,file_handle) == 0) return false;
+	return true;
+}
+
 void DOS_FCB::FileClose(Bit8u & _fhandle) {
 	_fhandle=sGet(sFCB,file_handle);
 	sSave(sFCB,file_handle,0xff);
diff --git a/src/dos/dos_files.cpp b/src/dos/dos_files.cpp
index 0c37e33e..6c921731 100644
--- a/src/dos/dos_files.cpp
+++ b/src/dos/dos_files.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_files.cpp,v 1.93 2007-10-20 19:13:59 c2woody Exp $ */
+/* $Id: dos_files.cpp,v 1.94 2008-01-21 21:26:49 qbix79 Exp $ */
 
 #include <string.h>
 #include <stdlib.h>
@@ -851,6 +851,7 @@ bool DOS_FCBOpen(Bit16u seg,Bit16u offset) {
 
 bool DOS_FCBClose(Bit16u seg,Bit16u offset) {
 	DOS_FCB fcb(seg,offset);
+	if(!fcb.Valid()) return false;
 	Bit8u fhandle;
 	fcb.FileClose(fhandle);
 	DOS_CloseFile(fhandle);