diff --git a/src/dos/dos_classes.cpp b/src/dos/dos_classes.cpp
index 5f59e839..1aec59fb 100644
--- a/src/dos/dos_classes.cpp
+++ b/src/dos/dos_classes.cpp
@@ -389,8 +389,8 @@ bool DOS_FCB::Extended(void) {
 
 void DOS_FCB::Create(bool _extended) {
 	Bitu fill;
-	if (_extended) fill=36+7;
-	else fill=36;
+	if (_extended) fill=33+7;
+	else fill=33;
 	Bitu i;
 	for (i=0;i<fill;i++) mem_writeb(real_pt+i,0);
 	pt=real_pt;