1 files changed, 4 insertions, 3 deletions
diff --git a/components/cplusplus/cxx_Mutex.cpp b/components/cplusplus/cxx_Mutex.cpp
index 229e842446..da6f80985f 100644
--- a/components/cplusplus/cxx_Mutex.cpp
+++ b/components/cplusplus/cxx_Mutex.cpp
@@ -1,18 +1,19 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  */
-#include "Mutex.h"
+
+#include "cxx_mutex.h"
 
 using namespace rtthread;
 
 Mutex::Mutex(const char *name)
 {
-    rt_mutex_init(&mID, name, RT_IPC_FLAG_FIFO);
+    rt_mutex_init(&mID, name, RT_IPC_FLAG_PRIO);
 }
 
 bool Mutex::lock(int32_t millisec)