diff --git a/third_party/rt-thread-5.0/msh_cmd.c b/third_party/rt-thread-5.0/msh_cmd.c
index afb874c5..27c2912b 100644
--- a/third_party/rt-thread-5.0/msh_cmd.c
+++ b/third_party/rt-thread-5.0/msh_cmd.c
@@ -14,6 +14,7 @@
 
 #if defined(PKG_USING_CHERRYUSB)
 
+#if 0
 #if defined(PKG_CHERRYUSB_DEVICE_CDC_TEMPLATE)
 void cdc_acm_init(void);
 MSH_CMD_EXPORT(cdc_acm_init, start cdc_acm_init);
@@ -68,6 +69,7 @@ void audio_v2_test(void);
 MSH_CMD_EXPORT(audio_v2_init, start audio_v2_init);
 MSH_CMD_EXPORT(audio_v2_test, start audio_v2_test);
 #endif
+#endif
 
 #if defined(PKG_CHERRYUSB_HOST)
 int lsusb(int argc, char **argv);