diff --git a/devices/air724/air724.c b/devices/air724/air724.c
index d215f44b..4df67f64 100644
--- a/devices/air724/air724.c
+++ b/devices/air724/air724.c
@@ -160,7 +160,7 @@ static int air724_close_apn(void)
     return 0;
 }
 
-static int air724_send_mode_set(sal_send_mode_t mode)
+static int air724_send_mode_set(air724_send_mode_t mode)
 {
 #if TOS_CFG_MODULE_SINGLE_LINK_EN > 0u	
     int try = 0;
@@ -181,7 +181,7 @@ static int air724_send_mode_set(sal_send_mode_t mode)
 #endif
 }
 
-static int air724_multilink_set(sal_multilink_state_t state)
+static int air724_multilink_set(air724_multilink_state_t state)
 {
     int try = 0;
     at_echo_t echo;
@@ -189,7 +189,7 @@ static int air724_multilink_set(sal_multilink_state_t state)
     while (try++ < 10)
     {
         tos_at_echo_create(&echo, NULL, 0, NULL);
-        tos_at_cmd_exec(&echo, 300, "AT+CIPMUX=%d\r\n", state == SAL_MULTILINK_STATE_ENABLE ? 1 : 0);
+        tos_at_cmd_exec(&echo, 300, "AT+CIPMUX=%d\r\n", state == AIR724_MULTILINK_STATE_ENABLE ? 1 : 0);
         if (echo.status == AT_ECHO_STATUS_OK)
         {
             return 0;
@@ -275,14 +275,14 @@ static int air724_init(void)
     }
     
 #else
-    if (air724_multilink_set(SAL_MULTILINK_STATE_ENABLE) != 0)
+    if (air724_multilink_set(AIR724_MULTILINK_STATE_ENABLE) != 0)
     {
         printf("multilink set FAILED\n");
         return -1;
     }
 #endif
 
-    if (air724_send_mode_set(SAL_SEND_MODE_NORMAL) != 0)
+    if (air724_send_mode_set(AIR724_SEND_MODE_NORMAL) != 0)
     {
         printf("send mode set FAILED\n");
         return -1;
diff --git a/devices/air724/air724.h b/devices/air724/air724.h
index 28bec445..c721665f 100644
--- a/devices/air724/air724.h
+++ b/devices/air724/air724.h
@@ -20,15 +20,15 @@
 
 #include "tos_hal.h"
 
-typedef enum sal_send_mode {
-    SAL_SEND_MODE_NORMAL,
-    SAL_SEND_MODE_TRANSPARENT,
-} sal_send_mode_t;
+typedef enum air724_send_mode {
+    AIR724_SEND_MODE_NORMAL,
+    AIR724_SEND_MODE_TRANSPARENT,
+} air724_send_mode_t;
 
-typedef enum sal_multilink_state {
-    SAL_MULTILINK_STATE_ENABLE,
-    SAL_MULTILINK_STATE_DISABLE,
-} sal_multilink_state_t;
+typedef enum air724_multilink_state {
+    AIR724_MULTILINK_STATE_ENABLE,
+    AIR724_MULTILINK_STATE_DISABLE,
+} air724_multilink_state_t;
 
 int air724_sal_init(hal_uart_port_t uart_port);