diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d4f3cde6a6a63bb1fd0548f1ebd68c7315f1c06..30cec2c8e103311018030f909a16397c04961e3f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,7 +68,7 @@ if (WIN32)
     if (MSVC)
         add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP /openmp")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP /openmp /utf-8")
     endif()
 
     set(LIB_Ws2_32 Ws2_32)