diff --git a/src/system/boot/platform/bios_ia32/start.cpp b/src/system/boot/platform/bios_ia32/start.cpp
index 90dc88e3bd..bda4b1065f 100644
--- a/src/system/boot/platform/bios_ia32/start.cpp
+++ b/src/system/boot/platform/bios_ia32/start.cpp
@@ -28,7 +28,7 @@
 #include "smp.h"
 
 
-#define HEAP_SIZE (512 * 1024)
+#define HEAP_SIZE (1024 * 1024)
 
 
 // GCC defined globals