diff --git a/channels/urbdrc/client/urbdrc_main.c b/channels/urbdrc/client/urbdrc_main.c
index 6f383ecb7..6a6dd7502 100644
--- a/channels/urbdrc/client/urbdrc_main.c
+++ b/channels/urbdrc/client/urbdrc_main.c
@@ -114,7 +114,7 @@ static int func_container_id_generate(IUDEVICE* pdev, char* strContainerId)
 
 static int func_instance_id_generate(IUDEVICE* pdev, char* strInstanceId, size_t len)
 {
-	char instanceId[17];
+	char instanceId[17] = { 0 };
 	sprintf_s(instanceId, sizeof(instanceId), "\\%s", pdev->getPath(pdev));
 	/* format */
 	sprintf_s(strInstanceId, len,