diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f89323..dd12377 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -127,8 +127,8 @@ if(UNIX OR MINGW)
     include_directories(SYSTEM third_party/protobuf/src)
   endif()
   if(NOT ZLIB_FOUND)
-    add_subdirectory(third_party/zlib)
     include_directories(SYSTEM third_party/zlib)
+    add_subdirectory(third_party/zlib)
     include_directories(${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib)
   endif()
 else()
@@ -150,8 +150,8 @@ else()
   add_subdirectory(third_party/protobuf/cmake)
   include_directories(SYSTEM third_party/protobuf/src)
 
-  add_subdirectory(third_party/zlib)
   include_directories(third_party/zlib)
+  add_subdirectory(third_party/zlib)
   include_directories(${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib)
   set_property(TARGET example PROPERTY FOLDER "third_party")
   set_property(TARGET minigzip PROPERTY FOLDER "third_party")