diff --git a/openbsc/configure.ac b/openbsc/configure.ac
index 081e416..fe99569 100644
--- a/openbsc/configure.ac
+++ b/openbsc/configure.ac
@@ -169,6 +169,7 @@
     tests/si/Makefile
     tests/abis/Makefile
     tests/smpp/Makefile
+    tests/trau/Makefile
     doc/Makefile
     doc/examples/Makefile
     Makefile)