diff --git a/ipv6/dhcp6/Makefile b/ipv6/dhcp6/Makefile
index 31957ef0a..82c970c95 100644
--- a/ipv6/dhcp6/Makefile
+++ b/ipv6/dhcp6/Makefile
@@ -15,6 +15,7 @@ PKG_SOURCE:=dhcpv6-linux-$(PKG_VERSION).zip
 PKG_SOURCE_URL:=@SF/dhcpv6-linux
 PKG_MD5SUM:=86193dfa62137db3ea459543db4f1102
 
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 PKG_UNPACK:=unzip -d $(PKG_BUILD_DIR)/ $(DL_DIR)/$(PKG_SOURCE)
 
 include $(INCLUDE_DIR)/package.mk