diff --git a/lib_i386/board.c b/lib_i386/board.c
index f3da0a2..659f9a2 100644
--- a/lib_i386/board.c
+++ b/lib_i386/board.c
@@ -84,7 +84,7 @@
 {
 	/* start malloc area right after the stack */
 	mem_malloc_start = i386boot_bss_start +
-		i386boot_bss_size + CFG_STACK_SIZE;
+		i386boot_bss_size + CONFIG_SYS_STACK_SIZE;
 	mem_malloc_start = (mem_malloc_start+3)&~3;
 
 	/* Use all available RAM for malloc() */
@@ -137,7 +137,7 @@
 		i386boot_romdata_dest, i386boot_romdata_dest+i386boot_romdata_size-1,
 		i386boot_bss_start, i386boot_bss_start+i386boot_bss_size-1,
 		i386boot_bss_start+i386boot_bss_size,
-		i386boot_bss_start+i386boot_bss_size+CFG_STACK_SIZE-1);
+		i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);
 
 
 	return (0);