diff --git a/src/Native/CMakeLists.txt b/src/Native/CMakeLists.txt
index 3a0ed9b795..947a664ab6 100644
--- a/src/Native/CMakeLists.txt
+++ b/src/Native/CMakeLists.txt
@@ -10,6 +10,7 @@ include_directories("${CMAKE_BINARY_DIR}/../../")
 if(WIN32)
     add_definitions(-DWIN32)
     add_definitions(-D_WIN32=1)
+    add_definitions(-DUNICODE -D_UNICODE)
     if(IS_64BIT_BUILD)
         add_definitions(-D_WIN64=1)
     endif()