--- Makefile.in
+++ Makefile.in
@@ -367,7 +367,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src config tests
+SUBDIRS = src config
 EXTRA_DIST = test docs examples windows cmake bootstrap.sh CMakeLists.txt CONTRIBUTORS README.md CHANGELOG.md CONTRIBUTING.md
 all: all-recursive