diff --git a/lib_avr32/Makefile b/lib_avr32/Makefile
index ebe237b..37b8051 100644
--- a/lib_avr32/Makefile
+++ b/lib_avr32/Makefile
@@ -27,12 +27,14 @@
 
 LIB	= $(obj)lib$(ARCH).a
 
-SOBJS	= memset.o
+SOBJS-y	+= memset.o
 
-COBJS	= board.o interrupts.o bootm.o
+COBJS-y	+= board.o
+COBJS-y	+= bootm.o
+COBJS-y	+= interrupts.o
 
-SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
 
 $(LIB):	$(obj).depend $(OBJS)
 	$(AR) $(ARFLAGS) $@ $(OBJS)