diff --git a/Makefile.in b/Makefile.in
index 2561e4b71..85dfeac4c 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -173,7 +173,7 @@ endif
 endif
 
 # FIXME: Drop once top-level make is resolved
--include test/unit/Makefile
+-include $(top_srcdir)/test/unit/Makefile
 include $(top_srcdir)/device_mapper/Makefile
 include $(top_srcdir)/base/Makefile