diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 70bef540..24b3d98f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_subdirectory(common)
-add_subdirectory(tools)
 add_subdirectory(emulator)
 add_subdirectory(unicorn-emulator)
 add_subdirectory(windows-emulator)
@@ -12,4 +11,5 @@ if (NOT MOMO_BUILD_AS_LIBRARY)
         add_subdirectory(test-sample)
     endif()
     add_subdirectory(windows-emulator-test)
+    add_subdirectory(tools)
 endif()