diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile
index 7a869d3c04..c3b281650a 100644
--- a/ports/stm32/Makefile
+++ b/ports/stm32/Makefile
@@ -422,6 +422,11 @@ HAL_SRC_C += $(addprefix $(HAL_DIR)/Src/stm32$(MCU_SERIES)xx_,\
 	hal_dma_ex.c \
 	hal_dcmi.c \
 	)
+ifeq ($(MCU_SERIES),$(filter $(MCU_SERIES),f4))
+# HAL F4-1.16.0 has a bug with missing parentheses in HAL_MMC_Erase.
+# This function is unused so let the error go by as a warning.
+$(BUILD)/$(HAL_DIR)/Src/stm32$(MCU_SERIES)xx_hal_mmc.o: CFLAGS += -Wno-error=parentheses
+endif
 endif
 
 ifeq ($(CMSIS_MCU),$(filter $(CMSIS_MCU),STM32H743xx STM32H750xx STM32H7A3xx STM32H7A3xxQ STM32H7B3xx STM32H7B3xxQ))
diff --git a/ports/stm32/boards/stm32f4xx_hal_conf_base.h b/ports/stm32/boards/stm32f4xx_hal_conf_base.h
index f09990fd95..d42f3ba19f 100644
--- a/ports/stm32/boards/stm32f4xx_hal_conf_base.h
+++ b/ports/stm32/boards/stm32f4xx_hal_conf_base.h
@@ -42,6 +42,7 @@
 #include "stm32f4xx_hal_i2c.h"
 #include "stm32f4xx_hal_i2s.h"
 #include "stm32f4xx_hal_iwdg.h"
+#include "stm32f4xx_hal_mmc.h"
 #include "stm32f4xx_hal_pcd.h"
 #include "stm32f4xx_hal_pwr.h"
 #include "stm32f4xx_hal_rcc.h"
@@ -74,6 +75,7 @@
 #define HAL_I2C_MODULE_ENABLED
 #define HAL_I2S_MODULE_ENABLED
 #define HAL_IWDG_MODULE_ENABLED
+#define HAL_MMC_MODULE_ENABLED
 #define HAL_PCD_MODULE_ENABLED
 #define HAL_PWR_MODULE_ENABLED
 #define HAL_RCC_MODULE_ENABLED