diff --git a/Makefile.dj b/Makefile.dj
index bfd1fe9b..bba45eb6 100644
--- a/Makefile.dj
+++ b/Makefile.dj
@@ -12,7 +12,8 @@ CC      = gcc
 CFLAGS  = -O2 -Wall -DWATT32 -Dselect=select_s -DHAVE_AF_INET6 \
           -DHAVE_PF_INET6 -DHAVE_IOCTLSOCKET -DHAVE_STRUCT_IN6_ADDR \
           -DHAVE_STRUCT_SOCKADDR_IN6 -DHAVE_STRUCT_ADDRINFO \
-          -DHAVE_ARPA_NAMESER_H -DNS_INADDRSZ=4 -I$(WATT32_ROOT)/inc
+          -DHAVE_ARPA_NAMESER_H -DNS_INADDRSZ=4 \
+          -DHAVE_SOCKADDR_IN6_SIN6_SCOPE_ID -I$(WATT32_ROOT)/inc
 
 LDFLAGS = -s
 EX_LIBS = $(WATT32_ROOT)/lib/libwatt.a