diff --git a/build.symbian/pjsip.mmp b/build.symbian/pjsip.mmp
index 57c6116..785a799 100644
--- a/build.symbian/pjsip.mmp
+++ b/build.symbian/pjsip.mmp
@@ -36,25 +36,25 @@
 //SOURCE	sip_auth_aka.c
 SOURCE	sip_auth_client.c
 SOURCE	sip_auth_msg.c
-SOURCE	sip_auth_parser.c
+SOURCE	sip_auth_parser_wrap.cpp
 SOURCE	sip_auth_server.c
 SOURCE	sip_config.c
-SOURCE	sip_dialog.c
-SOURCE	sip_endpoint.c
+SOURCE	sip_dialog_wrap.cpp
+SOURCE	sip_endpoint_wrap.cpp
 SOURCE	sip_errno.c
 SOURCE	sip_msg.c
-SOURCE	sip_parser.c
+SOURCE	sip_parser_wrap.cpp
 SOURCE	sip_resolve.c
-SOURCE	sip_tel_uri.c
+SOURCE	sip_tel_uri_wrap.cpp
 SOURCE	sip_transaction.c
-SOURCE	sip_transport.c
+SOURCE	sip_transport_wrap.cpp
 SOURCE	sip_transport_loop.c
 SOURCE	sip_transport_tcp.c
 SOURCE	sip_transport_udp.c
 SOURCE	sip_ua_layer.c
 SOURCE	sip_uri.c
-SOURCE	sip_util.c
-SOURCE	sip_util_proxy.c
+SOURCE	sip_util_wrap.cpp
+SOURCE	sip_util_proxy_wrap.cpp
 SOURCE	sip_util_statefull.c
 
 SYSTEMINCLUDE	..\pjlib\include