diff --git a/CMakeLists.txt b/CMakeLists.txt
index d6448a25..5f2ae2ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -205,8 +205,8 @@ IF(NOT CMAKE_DEBUG_POSTFIX)
 ENDIF()
 
 IF(MSVC)
-    SET(CPP_DEFS ${CPP_DEFS} _CRT_SECURE_NO_WARNINGS _CRT_NONSTDC_NO_DEPRECATE NOMINMAX)
-    SET(C_FLAGS ${C_FLAGS} /wd4065 /wd4098 /wd4200)
+    SET(CPP_DEFS ${CPP_DEFS} NOMINMAX)
+    SET(C_FLAGS ${C_FLAGS} /wd4065)
 
     IF(NOT DXSDK_DIR)
         STRING(REGEX REPLACE "\\\\" "/" DXSDK_DIR "$ENV{DXSDK_DIR}")