diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,8 @@
 
 
 # SOURCES: list of sources in the user application
-SOURCES = main.c system/usbd_conf.c system/usbd_cdc_if.c system/usb_device.c system/usbd_desc.c system/interrupts.c system/system_stm32f0xx.c gpio.c spi.c ssd1306.c stringhelpers.c display.c system/syslib.c storage.c flash.c max31855.c max31865.c pid.c
+SOURCES = main.c gpio.c ssd1306.c display.c flash.c max31855.c max31865.c pid.c
+SOURCES += system/usbd_conf.c system/usbd_cdc_if.c system/usb_device.c system/usbd_desc.c system/spi.c system/interrupts.c system/system_stm32f0xx.c system/stringhelpers.c system/syslib.c 
 #SRC = $(shell find . -name *.c)
 
 # TARGET: name of the user application