diff --git a/os/board/rtl8721csm/src/component/common/bluetooth/realtek/sdk/example/ble_scatternet/ble_tizenrt_scatternet_app.c b/os/board/rtl8721csm/src/component/common/bluetooth/realtek/sdk/example/ble_scatternet/ble_tizenrt_scatternet_app.c
index 81c2c38010..4db56ce81c 100644
--- a/os/board/rtl8721csm/src/component/common/bluetooth/realtek/sdk/example/ble_scatternet/ble_tizenrt_scatternet_app.c
+++ b/os/board/rtl8721csm/src/component/common/bluetooth/realtek/sdk/example/ble_scatternet/ble_tizenrt_scatternet_app.c
@@ -485,18 +485,18 @@ int ble_tizenrt_scatternet_handle_upstream_msg(uint16_t subtype, void *pdata)
 		case BLE_TIZENRT_MSG_START_ADV:
         {
             ret = le_adv_start();
-            if(GAP_CAUSE_SUCCESS == ret)
-                dbg("[Upstream] Start Adv Success \n");
-            else
-                dbg("[Upstream] Start Adv Fail !! 0x%x \n", ret);
+            if(GAP_CAUSE_SUCCESS == ret)
+                debug_print("[Upstream] Start Adv Success \n");
+            else
+                dbg("[Upstream] Start Adv Fail !! 0x%x \n", ret);
         }
 			break;
 		case BLE_TIZENRT_MSG_STOP_ADV:
 			ret = le_adv_stop();
-			if(GAP_CAUSE_SUCCESS == ret)
-                           dbg("[Upstream] Stop Adv Success \n");
-                       else
-                           dbg("[Upstream] Stop Adv Fail !! 0x%x \n", ret);
+            if(GAP_CAUSE_SUCCESS == ret)
+                debug_print("[Upstream] Stop Adv Success \n");
+            else
+                dbg("[Upstream] Stop Adv Fail !! 0x%x \n", ret);
 			break;
         case BLE_TIZENRT_MSG_DISCONNECT:
         {
@@ -735,13 +735,13 @@ void ble_tizenrt_scatternet_app_handle_dev_state_evt(T_GAP_DEV_STATE new_state,
             }
             else
             {
-                dbg("GAP adv stopped \n");
+                debug_print("GAP adv stopped \n");
             }
             ble_tizenrt_scatternet_gap_dev_state.gap_adv_sub_state = new_state.gap_adv_sub_state;
         }
         else if (new_state.gap_adv_state == GAP_ADV_STATE_ADVERTISING)
         {
-            dbg("GAP adv start \n");
+            debug_print("GAP adv start \n");
         }
         ble_tizenrt_scatternet_gap_dev_state.gap_adv_state = new_state.gap_adv_state;
     }