diff --git a/main/i2s_main.c b/main/i2s_main.c
index 3b253d5..96886be 100644
--- a/main/i2s_main.c
+++ b/main/i2s_main.c
@@ -25,6 +25,7 @@ i2c_master_bus_config_t i2c_bus_config = {
         .scl_io_num = GPIO_NUM_17,
         .sda_io_num = GPIO_NUM_18,
         .glitch_ignore_cnt = 7,
+        .flags.enable_internal_pullup = true,
     };
     i2c_master_bus_handle_t bus_handle;
 
@@ -144,9 +145,6 @@ void app_main(void)
     i2s_example_init_std_duplex();
     ESP_ERROR_CHECK(i2c_new_master_bus(&i2c_bus_config, &bus_handle));
     int ret;
-     
-     gpio_set_pull_mode(GPIO_NUM_17, GPIO_PULLUP_ONLY);
-     gpio_set_pull_mode(GPIO_NUM_18, GPIO_PULLUP_ONLY);
  
     ESP_GOTO_ON_ERROR(i2c_master_bus_add_device(bus_handle, &chipconfig, &i2c_dev), err, TAG, "i2c new bus failed");