--- a/Makefile.am
+++ b/Makefile.am
@@ -30,6 +30,7 @@
 
 DOCDIR = $(datadir)/doc/$(PACKAGE)
 DOCLIST = $(top_srcdir)/README $(top_srcdir)/COPYING $(top_srcdir)/AUTHORS $(top_srcdir)/ChangeLog
+ACLOCAL_AMFLAGS = -I m4
 
 EXTRA_DIST = $(DOCLIST) \
        debian/changelog debian/control debian/copyright \