diff --git a/dbm/Makefile.in b/dbm/Makefile.in
index dcd6f8c70198..1a6b868226bd 100644
--- a/dbm/Makefile.in
+++ b/dbm/Makefile.in
@@ -15,4 +15,8 @@ DIRS =  include \
         src     \
 	$(NULL)
 
+ifdef ENABLE_TESTS
+DIRS += tests
+endif
+
 include $(topsrcdir)/config/rules.mk