diff --git a/CMakeLists.txt b/CMakeLists.txt
index fabee91f..d197c499 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,10 @@ if (CMAKE_COMPILER_IS_GNUCXX)
    endif (CMAKE_SYSTEM_NAME MATCHES Linux)
 endif (CMAKE_COMPILER_IS_GNUCXX)
 if(MSVC)
-  add_definitions( -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE )
+  if (MSVC_VERSION GREATER 1399)
+    # If using Visual C++ 2005 (MSVC80) and greater (MSVC_VERSION=1400)
+    add_definitions(/D_CRT_SECURE_NO_DEPRECATE /D_CRT_NONSTDC_NO_DEPRECATE /Zc:wchar_t-)
+  endif (MSVC_VERSION GREATER 1399)
 endif(MSVC)
 if (WIN32)
   set(CMAKE_DEBUG_POSTFIX "d")