diff --git a/kaldifeat/python/CMakeLists.txt b/kaldifeat/python/CMakeLists.txt
index 60d6382..6124aca 100644
--- a/kaldifeat/python/CMakeLists.txt
+++ b/kaldifeat/python/CMakeLists.txt
@@ -1,2 +1,5 @@
 add_subdirectory(csrc)
-add_subdirectory(tests)
+
+if(kaldifeat_BUILD_TESTS)
+  add_subdirectory(tests)
+endif()