diff --git a/pjsip/build/Makefile b/pjsip/build/Makefile
index dd331a1..0f7624e 100644
--- a/pjsip/build/Makefile
+++ b/pjsip/build/Makefile
@@ -36,6 +36,7 @@
 #
 export PJSIP_SRCDIR = ../src/pjsip
 export PJSIP_OBJS += $(OS_OBJS) $(M_OBJS) $(CC_OBJS) $(HOST_OBJS) \
+		sip_config.o \
 		sip_errno.o sip_msg.o sip_parser.o sip_tel_uri.o sip_uri.o \
 		sip_endpoint.o sip_util.o sip_util_proxy.o \
 		sip_resolve.o sip_transport.o sip_transport_loop.o \