diff --git a/hal/audio_hal_plugin.h b/hal/audio_hal_plugin.h
index b5033c8..3d77b23 100644
--- a/hal/audio_hal_plugin.h
+++ b/hal/audio_hal_plugin.h
@@ -86,6 +86,7 @@
     AUDIO_HAL_PLUGIN_MSG_CODEC_GET_PP_EQ, /**< get EQ params */
     AUDIO_HAL_PLUGIN_MSG_CODEC_GET_PP_EQ_SUBBANDS, /**< get EQ subbands params */
     AUDIO_HAL_PLUGIN_MSG_CODEC_TUNNEL_GET_CMD, /**< pass through get cmds */
+    AUDIO_HAL_PLUGIN_MSG_SILENT_MODE, /**<set silent boot mode */
     AUDIO_HAL_PLUGIN_MSG_MAX
 } audio_hal_plugin_msg_type_t;