diff --git a/Makefile.am b/Makefile.am
index 923eafb2d6d49f2ae81a9a7d4ee0d90b05d5adf3..12c0de123a72b7e43f5d5a5c18483c184c5664fd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 SUBDIRS = gnu-compat alberta_util alberta add_ons
 
-ACLOCAL_AMFLAGS  = -I ./m4
+ACLOCAL_AMFLAGS  = -I m4
 
 EXTRA_DIST = gen-assemble-fcts.sh mkdoffreemasks.sh