diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_act.c b/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
index ce98b0a987..7cee634164 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_act.c
@@ -133,9 +133,11 @@ extern tBTA_DM_CONTRL_STATE bta_dm_pm_obtain_controller_state(void);
 static BOOLEAN bta_dm_remove_sec_dev_entry(BD_ADDR remote_bd_addr);
 #endif  ///SMP_INCLUDED == TRUE
 #if (BLE_INCLUDED == TRUE)
+#if (BLE_42_SCAN_EN == TRUE)
 static void bta_dm_scan_results_cb(tBTM_INQ_RESULTS *p_inq, UINT8 *p_eir);
 static void bta_dm_scan_cmpl_cb(void *p_result);
 static void bta_dm_scan_discard_cb (uint32_t num_dis);
+#endif // (BLE_42_SCAN_EN == TRUE)
 #endif  ///BLE_INCLUDED == TRUE
 
 #if (CLASSIC_BT_INCLUDED == TRUE)
@@ -5242,6 +5244,7 @@ void bta_dm_ble_set_key_material (tBTA_DM_MSG *p_data)
 }
 #endif
 
+#if (BLE_42_SCAN_EN == TRUE)
 /*******************************************************************************
 **
 ** Function         bta_dm_ble_scan
@@ -5285,6 +5288,7 @@ void bta_dm_ble_scan (tBTA_DM_MSG *p_data)
         btm_ble_clear_topology_mask(BTM_BLE_STATE_PASSIVE_SCAN_BIT);
     }
 }
+#endif // (BLE_42_SCAN_EN == TRUE)
 
 #if (BLE_42_ADV_EN == TRUE)
 /*******************************************************************************
diff --git a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
index d03825a5d6..32eda4d51f 100644
--- a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
+++ b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
@@ -1706,7 +1706,9 @@ typedef union {
     tBTA_DM_API_SET_RPA_TIMEOUT         set_rpa_timeout;
     tBTA_DM_API_ADD_DEV_TO_RESOLVING_LIST add_dev_to_resolving_list;
     tBTA_DM_API_BLE_DISCONNECT          ble_disconnect;
+#if ((BLE_42_SCAN_EN == TRUE) || (BLE_50_EXTEND_SCAN_EN == TRUE))
     tBTA_DM_API_UPDATE_DUPLICATE_EXCEPTIONAL_LIST ble_duplicate_exceptional_list;
+#endif // ((BLE_42_SCAN_EN == TRUE) || (BLE_50_EXTEND_SCAN_EN == TRUE))
 #if (BLE_50_FEATURE_SUPPORT == TRUE)
     tBTA_DM_API_READ_PHY                ble_read_phy;
     tBTA_DM_API_SET_PER_DEF_PHY         ble_set_per_def_phy;