diff --git a/nemu/Kconfig b/nemu/Kconfig
index cd9b909..9243aba 100644
--- a/nemu/Kconfig
+++ b/nemu/Kconfig
@@ -164,7 +164,7 @@ config MTRACE
 config MTRACE_RANGE
   depends on MTRACE
   string "Memory trace active range"
-  default "0-0xfffffff"
+  default "0x0-0xfffffff"
   help
     Memory tracer will only print memory access in these ranges.
     Use comma to seperate between ranges.