diff --git a/components/drivers/serial/serial.c b/components/drivers/serial/serial.c
index a5d90b9b99..149cfaff3e 100644
--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@@ -1024,7 +1024,7 @@ static rt_err_t rt_serial_control(struct rt_device *dev,
             break;
         case TCFLSH:
             {
-                int queue = *(int *)args;
+                int queue = (int)args;
 
                 _serial_flush(serial, queue);
             }
diff --git a/components/libc/termios/posix_termios.c b/components/libc/termios/posix_termios.c
index 72afa8188d..4ec513ef1d 100644
--- a/components/libc/termios/posix_termios.c
+++ b/components/libc/termios/posix_termios.c
@@ -111,12 +111,12 @@ int tcsendbreak(int fd, int dur)
 
 int tcflush(int fd, int queue)
 {
-    return ioctl(fd, TCFLSH, (void*)&queue);
+    return ioctl(fd, TCFLSH, (void*)queue);
 }
 
 int tcflow(int fd, int action)
 {
-    return ioctl(fd, TCXONC, (void*)&action);
+    return ioctl(fd, TCXONC, (void*)action);
 }
 
 /**