diff --git a/include/osmocom/Makefile.am b/include/osmocom/Makefile.am
new file mode 100644
index 0000000..09db97a
--- /dev/null
+++ b/include/osmocom/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = \
+	sgsn \
+	$(NULL)