diff --git a/Makefile b/Makefile
index 063aec6..5ab708a 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ CC := sdcc
 CFLAGS := -mstm8 --std-c99 --opt-code-size --Werror
 LDFLAGS = -mstm8 --out-fmt-ihx -lstm8
 FIRMWARE := main
-SRC_FILES := $(wildcard *.c)
+SRC_FILES := main.c softi2c_master.c eeprom_blockprog.c
 OBJ_FILES := $(patsubst %.c,%.rel,$(SRC_FILES))
 
 all: $(FIRMWARE).ihx