diff --git a/firmware/slavechip/Makefile b/firmware/slavechip/Makefile
index beadcff..fd75855 100644
--- a/firmware/slavechip/Makefile
+++ b/firmware/slavechip/Makefile
@@ -2,7 +2,7 @@ include ../Makefile.inc
 
 COMPILE = avr-gcc $(CFLAGS) $(DEFINES)
 
-OBJECTS = mcp_adc.o i2c_simple.o
+OBJECTS = main.o mcp_adc.o i2c_simple.o
 
 # symbolic targets:
 all:	firmware.hex