--- a/Makefile.in
+++ b/Makefile.in
@@ -573,7 +573,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
-SUBDIRS = lgl gl includes lib libextra src doc tests po \
+SUBDIRS = lgl gl includes lib libextra src \
 	$(am__append_1)
 ACLOCAL_AMFLAGS = -I m4 -I gl/m4 -I lgl/m4
 EXTRA_DIST = cfg.mk maint.mk .clcopying