diff --git a/sample/CMakeLists.txt b/sample/CMakeLists.txt
index ab1c075..f866697 100644
--- a/sample/CMakeLists.txt
+++ b/sample/CMakeLists.txt
@@ -14,7 +14,9 @@ include_directories(
 )
 link_directories(${CMAKE_SOURCE_DIR}/../bin)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+if(UNIX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+endif(UNIX)
 
 add_executable(${PROJECT_NAME} ${SOURCES})