diff --git a/components/bt/esp_ble_mesh/lib/ext.c b/components/bt/esp_ble_mesh/lib/ext.c
index 0dcd73bfc9..3b09c04406 100644
--- a/components/bt/esp_ble_mesh/lib/ext.c
+++ b/components/bt/esp_ble_mesh/lib/ext.c
@@ -3989,6 +3989,7 @@ void bt_mesh_ext_mbt_server_cb_evt_to_btc(uint8_t event, void *model, void *ctx)
 typedef struct {
     uint64_t config_ble_mesh_stack_trace_level : 3;
 
+    uint64_t config_ble_mesh_use_ble_50: 1;
     uint64_t config_ble_mesh_use_duplicate_scan : 1;
     uint64_t config_ble_mesh_pb_adv : 1;
     uint64_t config_ble_mesh_pb_gatt : 1;
@@ -4154,6 +4155,7 @@ typedef struct {
 static const bt_mesh_ext_config_t bt_mesh_ext_cfg = {
     .config_ble_mesh_stack_trace_level              = BLE_MESH_LOG_LEVEL,
 
+    .config_ble_mesh_use_ble_50                     = IS_ENABLED(CONFIG_BLE_MESH_USE_BLE_50),
     .config_ble_mesh_use_duplicate_scan             = IS_ENABLED(CONFIG_BLE_MESH_USE_DUPLICATE_SCAN),
     .config_ble_mesh_pb_adv                         = IS_ENABLED(CONFIG_BLE_MESH_PB_ADV),
     .config_ble_mesh_pb_gatt                        = IS_ENABLED(CONFIG_BLE_MESH_PB_GATT),