--- a/Makefile.am	Thu Feb 04 19:18:03 2016 +0100
+++ b/Makefile.am	Thu Feb 04 20:21:06 2016 +0100
@@ -3,6 +3,8 @@
 SUBDIRS = loudmouth docs examples $(TEST_DIRS)
 DIST_SUBDIRS = loudmouth docs examples tests
 
+ACLOCAL_AMFLAGS = -I m4
+
 EXTRA_DIST +=			\
 	loudmouth-1.0.pc.in     \
 	README.WIN32