diff --git a/Makefile.am b/Makefile.am
index ce8c3dd7..64ff18e6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -26,7 +26,7 @@
 docdir = $(LIBTIFF_DOCDIR)
 
 AUTOMAKE_OPTIONS = dist-zip foreign
-ACLOCAL_AMFLAGS = -I ./m4 --output=./m4/aclocal.m4
+ACLOCAL_AMFLAGS = -I ./m4
 
 docfiles = \
 	COPYRIGHT \