diff --git a/nemu/src/monitor/sdb/sdb.c b/nemu/src/monitor/sdb/sdb.c
index 726b1e8..2ec69a2 100644
--- a/nemu/src/monitor/sdb/sdb.c
+++ b/nemu/src/monitor/sdb/sdb.c
@@ -69,6 +69,7 @@ static int cmd_si(char *args) {
   return 0;
 }
 
+void show_wp(void);
 static int cmd_info(char *args) {
   char *arg = strtok(NULL, " ");
   if (arg == NULL) {
@@ -79,7 +80,7 @@ static int cmd_info(char *args) {
   if (arg[0] == 'r') {
     isa_reg_display();
   } else if (arg[0] == 'w') {
-    printf("Watchpoint:\n");
+    show_wp();
   } else {
     p_help("info");
   }