diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
 
 
 # SOURCES: list of sources in the user application
-SOURCES = main.c usbd_conf.c usbd_cdc_if.c usb_device.c usbd_desc.c stm32f0xx_hal_msp.c stm32f0xx_it.c system_stm32f0xx.c gpio.c spi.c ssd1306.c stringhelpers.c display.c syslib.c storage.c flash.c max31855.c max31865.c
+SOURCES = main.c usbd_conf.c usbd_cdc_if.c usb_device.c usbd_desc.c stm32f0xx_it.c system_stm32f0xx.c gpio.c spi.c ssd1306.c stringhelpers.c display.c syslib.c storage.c flash.c max31855.c max31865.c
 
 # TARGET: name of the user application
 TARGET = main
@@ -31,9 +31,9 @@ USB_INCLUDES = -Imiddlewares/ST/STM32_US
 USB_INCLUDES += -Imiddlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc
 
 # USER_CFLAGS: user C flags (enable warnings, enable debug info)
-USER_CFLAGS = -Wall -g -ffunction-sections -fdata-sections -Os
+USER_CFLAGS = -Wall -g -ffunction-sections -fno-exceptions -fdata-sections -Os
 # USER_LDFLAGS:  user LD flags
-USER_LDFLAGS = -fno-exceptions -ffunction-sections -fdata-sections -Wl,--gc-sections
+USER_LDFLAGS = -fno-exceptions -ffunction-sections -fno-exceptions -fdata-sections -Wl,--gc-sections
 
 # TARGET_DEVICE: device to compile for
 TARGET_DEVICE = STM32F042x6