diff --git a/board/prodrive/pdnb3/config.mk b/board/prodrive/pdnb3/config.mk
index 6b0f18b..7670758 100644
--- a/board/prodrive/pdnb3/config.mk
+++ b/board/prodrive/pdnb3/config.mk
@@ -1,4 +1,4 @@
 TEXT_BASE = 0x01f00000
 
 # include NPE ethernet driver
-BOARDLIBS = cpu/ixp/npe/libnpe.a
+BOARDLIBS = $(obj)cpu/ixp/npe/libnpe.a