diff --git a/src/dosbox.cpp b/src/dosbox.cpp
index 6b3eae9b..34e4629e 100644
--- a/src/dosbox.cpp
+++ b/src/dosbox.cpp
@@ -170,6 +170,8 @@ void DOSBOX_Init(void) {
 	
 	secprop->AddInitFunction(&IO_Init);
 	secprop->AddInitFunction(&MEM_Init);
+	/* Keep 1 mb free for video memory some day */
+	secprop->Add_int("memsize",C_MEM_MAX_SIZE-1);
 	secprop->AddInitFunction(&CALLBACK_Init);
 	secprop->AddInitFunction(&PIC_Init);
 	secprop->AddInitFunction(&PROGRAMS_Init);