--- Makefile.in
+++ Makefile.in
@@ -367,7 +367,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src tests doc tools
+SUBDIRS = src
 EXTRA_HEADERS = src/mpc-log.h
 include_HEADERS = src/mpc.h @MPC_LOG_H@
 EXTRA_DIST = doc/fdl-1.3.texi src/mpc-log.h Makefile.vc