diff --git a/contrib/Makefile.am b/contrib/Makefile.am
index 63cbb820..c30689dc 100644
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -14,5 +14,7 @@
 ## along with this program; if not, write to the Free Software Foundation,
 ## Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
+include $(top_srcdir)/gtest.mk
+
 EXTRA_DIST=			\
 	mu-completion.zsh