diff --git a/nemu/src/monitor/sdb/sdb.c b/nemu/src/monitor/sdb/sdb.c
index 2ad7d10..9780a57 100644
--- a/nemu/src/monitor/sdb/sdb.c
+++ b/nemu/src/monitor/sdb/sdb.c
@@ -74,7 +74,7 @@ static int cmd_si(char *args) {
       return 0;
     int n = strtoumax(arg, NULL, base);
     if (n == UINTMAX_MAX) {
-      printf("%s is too large\n", args);
+      printf("%s is exceed the limit of uint\n", args);
       return 0;
     } else if (n == 0) {
       printf("Invalid argument for command si: %s\n", args);