diff --git a/pjsip/build/test_pjsip.dsp b/pjsip/build/test_pjsip.dsp
index 8e75079..d890d9d 100644
--- a/pjsip/build/test_pjsip.dsp
+++ b/pjsip/build/test_pjsip.dsp
@@ -125,6 +125,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE="..\src\test-pjsip\tsx_uas_test.c"
+# End Source File
+# Begin Source File
+
 SOURCE="..\src\test-pjsip\txdata_test.c"
 # End Source File
 # Begin Source File