diff --git a/Marlin/src/pins/stm32f1/pins_LONGER3D_LK.h b/Marlin/src/pins/stm32f1/pins_LONGER3D_LK.h
index 2c1fdf1d76..76e60b4226 100644
--- a/Marlin/src/pins/stm32f1/pins_LONGER3D_LK.h
+++ b/Marlin/src/pins/stm32f1/pins_LONGER3D_LK.h
@@ -158,7 +158,8 @@
   #define LCD_BRIGHTNESS_DEFAULT TFT_BACKLIGHT_PWM
 #endif
 
-#if ENABLED(ONBOARD_SDIO)
+#if SD_CONNECTION_IS(ONBOARD)
+  #define ONBOARD_SDIO
   #define SD_SS_PIN                         -1    // else SDSS set to PA4 in M43 (spi_pins.h)
 #endif