diff --git a/src/W800_SDK_v1.00.10/app/app_drivers/lcd/lcd.c b/src/W800_SDK_v1.00.10/app/app_drivers/lcd/lcd.c
index cb3cb37..f2394d1 100644
--- a/src/W800_SDK_v1.00.10/app/app_drivers/lcd/lcd.c
+++ b/src/W800_SDK_v1.00.10/app/app_drivers/lcd/lcd.c
@@ -382,7 +382,6 @@ void lcd_set_backlight(LCDConfig_t * const LCDConfig, uint8_t brightness)
         tls_gpio_cfg(LCDConfig->LCDPWMBacklightPin, WM_GPIO_DIR_OUTPUT, WM_GPIO_ATTR_FLOATING);
         tls_gpio_write(LCDConfig->LCDPWMBacklightPin, 0);
     }
-
 }
 
 void lcd_hardware_reset(LCDConfig_t * const LCDConfig)
@@ -523,5 +522,8 @@ static void lcd_set_cs(LCDConfig_t * const LCDConfig, LCDSelect_e selected)
 
 static void lcd_set_data_command(LCDConfig_t * const LCDConfig, LCDDataCommand_e dataCommand)
 {
+    // We wait for the mmc sdio driver to be ready before changing the LCD access mode
+    mmc_sdio_driver_blocking_wait_bus_free();
+
     tls_gpio_write(LCDConfig->LCDDataCommandPin, dataCommand);
 }