diff --git a/demos/STM32/RT-STM32F767ZI-NUCLEO144/halconf.h b/demos/STM32/RT-STM32F767ZI-NUCLEO144/halconf.h
index 2b9fef087..d7793e22c 100644
--- a/demos/STM32/RT-STM32F767ZI-NUCLEO144/halconf.h
+++ b/demos/STM32/RT-STM32F767ZI-NUCLEO144/halconf.h
@@ -139,7 +139,7 @@
  * @brief   Enables the SDC subsystem.
  */
 #if !defined(HAL_USE_SDC) || defined(__DOXYGEN__)
-#define HAL_USE_SDC                 TRUE
+#define HAL_USE_SDC                 FALSE
 #endif
 
 /**
diff --git a/demos/STM32/RT-STM32F767ZI-NUCLEO144/mcuconf.h b/demos/STM32/RT-STM32F767ZI-NUCLEO144/mcuconf.h
index 536403a38..7d9c3f1a7 100644
--- a/demos/STM32/RT-STM32F767ZI-NUCLEO144/mcuconf.h
+++ b/demos/STM32/RT-STM32F767ZI-NUCLEO144/mcuconf.h
@@ -258,8 +258,8 @@
 /*
  * SDC driver system settings.
  */
-#define STM32_SDC_USE_SDMMC1                TRUE
-#define STM32_SDC_USE_SDMMC2                TRUE
+#define STM32_SDC_USE_SDMMC1                FALSE
+#define STM32_SDC_USE_SDMMC2                FALSE
 #define STM32_SDC_SDMMC_UNALIGNED_SUPPORT   TRUE
 #define STM32_SDC_SDMMC_WRITE_TIMEOUT       1000
 #define STM32_SDC_SDMMC_READ_TIMEOUT        1000