diff --git a/test/Makefile.am b/test/Makefile.am
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -21,6 +21,7 @@
 	test/graph_utils_test \
 	test/heap_test \
 	test/kruskal_test \
+	test/hao_orlin_test \
         test/maps_test \
 	test/max_matching_test \
         test/random_test \
@@ -48,6 +49,7 @@
 test_graph_utils_test_SOURCES = test/graph_utils_test.cc
 test_heap_test_SOURCES = test/heap_test.cc
 test_kruskal_test_SOURCES = test/kruskal_test.cc
+test_hao_orlin_test_SOURCES = test/hao_orlin_test.cc
 test_maps_test_SOURCES = test/maps_test.cc
 test_max_matching_test_SOURCES = test/max_matching_test.cc
 test_path_test_SOURCES = test/path_test.cc