diff --git a/firmware/Makefile b/firmware/Makefile
index e9403e6..875c3a4 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -8,7 +8,7 @@ CFLAGS += -std=gnu99 -Wall # implements C99, for <util/atomic.h>
 include Makefile.inc
 
 # symbolic targets:
-all:	master
+all:	master slave
 
 master:
 	cd masterchip; $(MAKE) $(MFLAGS)