diff --git a/post/drivers/Makefile b/post/drivers/Makefile
index 0b6cdf5..0d87ae0 100644
--- a/post/drivers/Makefile
+++ b/post/drivers/Makefile
@@ -22,7 +22,7 @@
 #
 include $(TOPDIR)/config.mk
 
-LIB	= libpostdrivers.a
+LIB	= libpostdrivers.o
 
 COBJS-$(CONFIG_HAS_POST)	+= i2c.o memory.o rtc.o