diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e595855..789ec80a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -545,20 +545,9 @@ endif()
 if(MSVC)
   target_compile_options(onnx_proto
                          PRIVATE /MP
-                                 /wd4244 #'argument': conversion from 'google::
-                                         #protobuf::uint64' to 'int', possible
-                                         # loss of data
-                                 /wd4267 # Conversion from 'size_t' to 'int',
-                                         # possible loss of data
                                  ${EXTRA_FLAGS})
   target_compile_options(onnx
                          PRIVATE /MP
-                                 /wd4244 # 'argument': conversion from 'google::
-                                         # protobuf::uint64' to 'int', possible
-                                         # loss of data
-                                 /wd4267 # Conversion from 'size_t' to 'int',
-                                         # possible loss of data
-                                 /wd4996 # The second parameter is ignored.
                                  ${EXTRA_FLAGS})
   if(ONNX_USE_PROTOBUF_SHARED_LIBS)
       target_compile_options(onnx_proto