diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index 455014e..cea53d3 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -1,3 +1,5 @@
 include(../cmake/Templates.cmake)
 
-add_bluelib_module(NAME core)
+add_bluelib_module(
+	NAME core
+	SUBDIRS hash)