diff --git a/storage/mroonga/CMakeLists.txt b/storage/mroonga/CMakeLists.txt
index 5c420d9672b..29801eb5ce6 100644
--- a/storage/mroonga/CMakeLists.txt
+++ b/storage/mroonga/CMakeLists.txt
@@ -38,12 +38,12 @@ set(MRN_BUNDLED_GROONGA_DIR
   "${CMAKE_CURRENT_SOURCE_DIR}/${MRN_BUNDLED_GROONGA_RELATIVE_DIR}")
 if(EXISTS "${MRN_BUNDLED_GROONGA_DIR}")
   set(MRN_GROONGA_BUNDLED TRUE)
-else()
-  set(MRN_GROONGA_BUNDLED FALSE)
   if(MSVC)
     message(STATUS "Bundled Mroonga does not support MSVC yet")
     return()
   endif()
+else()
+  set(MRN_GROONGA_BUNDLED FALSE)
 endif()
 
 set(MRN_PLUGIN_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX})