diff --git a/depends/protobuf/CMakeLists.txt b/depends/protobuf/CMakeLists.txt
index 085af746f..5b54c8335 100644
--- a/depends/protobuf/CMakeLists.txt
+++ b/depends/protobuf/CMakeLists.txt
@@ -202,6 +202,9 @@ LIST(APPEND LIBPROTOBUF_FULL_SRCS ${LIBPROTOBUF_LITE_SRCS})
 IF(CMAKE_COMPILER_IS_GNUCC)
     SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wno-sign-compare")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-result")
+ELSEIF(MSVC)
+    # Disable warnings for integer conversion to smaller type
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4267")
 ENDIF()
 
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})