diff --git a/Makefile.am b/Makefile.am
index 2916ddd30a..0bc3fcfc76 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,7 +15,7 @@ SUBDIRS_DOCS =
 endif
 
 if BUILD_TESTS
-SUBDIRS_TESTS =
+SUBDIRS_TESTS = test tests testsuite
 else
 SUBDIRS_TESTS =
 endif