diff --git a/rt-thread-version/rt-thread-standard/tutorial/beep-player/decode.md b/rt-thread-version/rt-thread-standard/tutorial/beep-player/decode.md
index e9682de9593d3f3691561fbe9627fc0595974081..69125c0e16f472db2b2adbdc273a2d56bec4a6dc 100644
--- a/rt-thread-version/rt-thread-standard/tutorial/beep-player/decode.md
+++ b/rt-thread-version/rt-thread-standard/tutorial/beep-player/decode.md
@@ -324,7 +324,7 @@ int main(void)
 {
     /* user app entry */
     struct beep_song_data data;
-    int len, i;
+    int len, i=0;
     char name[20];
 
     beep_init();