diff --git a/src/dos/dos_memory.cpp b/src/dos/dos_memory.cpp
index 3033bcf8..6f6956f5 100644
--- a/src/dos/dos_memory.cpp
+++ b/src/dos/dos_memory.cpp
@@ -306,7 +306,7 @@ bool DOS_FreeMemory(Bit16u segment) {
 void DOS_BuildUMBChain(const char* use_umbs,bool ems_active) {
 	if ((strcmp(use_umbs,"false")!=0) && (machine!=MCH_TANDY)) {
 		Bit16u first_umb_seg=0xc800;
-		Bit16u first_umb_size=0x800;
+		Bit16u first_umb_size=0x1000;
 
 		dos_infoblock.SetStartOfUMBChain(UMB_START_SEG);
 		dos_infoblock.SetUMBChainState(0);		// UMBs not linked yet
diff --git a/src/dos/dos_tables.cpp b/src/dos/dos_tables.cpp
index b276ecde..438edce7 100644
--- a/src/dos/dos_tables.cpp
+++ b/src/dos/dos_tables.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_tables.cpp,v 1.22 2006-02-09 11:47:48 qbix79 Exp $ */
+/* $Id: dos_tables.cpp,v 1.23 2006-06-05 18:01:24 qbix79 Exp $ */
 
 #include "dosbox.h"
 #include "mem.h"
@@ -73,7 +73,7 @@ static Bit8u country_info[0x22] = {
 };
 
 void DOS_SetupTables(void) {
-	dos_memseg=0xd000;
+	dos_memseg=0xd800;
 	Bit16u seg,seg2;Bitu i;
 	dos.tables.mediaid=RealMake(DOS_GetMemory(4),0);
 	dos.tables.tempdta=RealMake(DOS_GetMemory(4),0);