diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ede66d95bb5699ef0480e3168227b218372bc8b1..898b7cb032846cb85e4cc8767ed6090b35f41e1a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,7 +10,9 @@ ADD_SUBDIRECTORY(client)
 ADD_SUBDIRECTORY(query)
 ADD_SUBDIRECTORY(kit)
 ADD_SUBDIRECTORY(plugins)
-ADD_SUBDIRECTORY(sync)
+IF (TD_SYNC)
+  ADD_SUBDIRECTORY(sync)
+ENDIF ()
 ADD_SUBDIRECTORY(balance)
 ADD_SUBDIRECTORY(mnode)
 ADD_SUBDIRECTORY(vnode)