diff --git a/CMakeLists.txt b/CMakeLists.txt
index 83de6b421cc..2989d56ac1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,3 +124,4 @@ add_subdirectory (contrib)
 add_subdirectory (libs)
 add_subdirectory (utils)
 add_subdirectory (dbms)
+add_subdirectory (private)