diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..1968119
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,5 @@
+SUBDIRS = debug gsm0408 db channel mgcp
+
+if BUILD_NAT
+SUBDIRS += bsc-nat
+endif