diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7c2c8ed6..d7fd4d55 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -316,7 +316,7 @@ if(WIN32)
         #     SET(WARNING_FLAGS "${WARNING_FLAGS} /wd${warning}")
         # endforeach(warning)
         
-        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /wd4996 /wd4250")
+        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /wd4996 /wd4250 -Dstrdup=_strdup")
     endif(MSVC)
     
     # assumed on Windows