diff --git a/MAC/MACIO/include/APL/Makefile.am b/MAC/MACIO/include/APL/Makefile.am
new file mode 100644
index 0000000000000000000000000000000000000000..3f093a312be0c74544b8a1761bc7a861d2f48f2e
--- /dev/null
+++ b/MAC/MACIO/include/APL/Makefile.am
@@ -0,0 +1,4 @@
+
+SUBDIRS = APLProtocol
+
+include $(top_srcdir)/Makefile.common