diff --git a/googletest/cmake/internal_utils.cmake b/googletest/cmake/internal_utils.cmake
index ca76f42d7..fe02dba60 100644
--- a/googletest/cmake/internal_utils.cmake
+++ b/googletest/cmake/internal_utils.cmake
@@ -102,7 +102,7 @@ macro(config_compiler_and_linker)
     if (CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
       set(cxx_base_flags "${cxx_base_flags} -Wno-implicit-float-size-conversion -ffp-model=precise")
     endif()
-  elseif (CMAKE_COMPILER_IS_GNUCXX)
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     set(cxx_base_flags "-Wall -Wshadow -Wundef")
     if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0)
       set(cxx_base_flags "${cxx_base_flags} -Wno-error=dangling-else")