diff --git a/build.symbian/pjlib_test.mmp b/build.symbian/pjlib_test.mmp
index 2f0738e..37c5c53 100644
--- a/build.symbian/pjlib_test.mmp
+++ b/build.symbian/pjlib_test.mmp
@@ -28,6 +28,7 @@
 SOURCE	exception.c
 SOURCE	fifobuf.c
 SOURCE	file.c
+SOURCE	hash.c
 SOURCE	ioq_perf.c
 SOURCE	ioq_tcp.c
 SOURCE	ioq_udp.c