diff --git a/depends/protobuf/CMakeLists.txt b/depends/protobuf/CMakeLists.txt
index dddefb06b..570c77b18 100644
--- a/depends/protobuf/CMakeLists.txt
+++ b/depends/protobuf/CMakeLists.txt
@@ -200,7 +200,9 @@ google/protobuf/compiler/zip_writer.cc
 
 LIST(APPEND LIBPROTOBUF_FULL_SRCS ${LIBPROTOBUF_LITE_SRCS})
 
-SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wno-sign-compare")
+IF(CMAKE_COMPILER_IS_GNUCC)
+    SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wno-sign-compare")
+ENDIF()
 
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
 SET(PROTOBUF_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR})