diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e6ff61..574627f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,10 +10,8 @@ file(GLOB_RECURSE  project_cpps ./src/*.cpp)
 file(GLOB_RECURSE  project_cxx ./src/*.cxx)
 file(GLOB_RECURSE  project_cc ./src/*.cc)
 
-if(UNIX)
-set(USE_SHIMLIB ON)
-else()
-set(USE_SHIMLIB OFF)
+if(NOT UNIX)
+        set(USE_SHIMLIB OFF)
 endif()
 if(UNIX AND USE_SHIMLIB)
         file(GLOB_RECURSE  project_c ./src/json/*.c)