diff --git a/src/system/boot/platform/bios_ia32/start.cpp b/src/system/boot/platform/bios_ia32/start.cpp
index dc632059ce..964c6a01b7 100644
--- a/src/system/boot/platform/bios_ia32/start.cpp
+++ b/src/system/boot/platform/bios_ia32/start.cpp
@@ -29,7 +29,7 @@
 #include "smp.h"
 
 
-#define HEAP_SIZE (1024 * 1024)
+#define HEAP_SIZE ((1024 + 256) * 1024)
 
 
 // GCC defined globals