diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f9b919..953f6ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,7 +70,7 @@ if (MSVC)
         list(APPEND MCL_CXX_FLAGS /WX)
     endif()
 
-    if (CMAKE_VS_PLATFORM_TOOLSET MATCHES "LLVM-vs[0-9]+")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
         list(APPEND MCL_CXX_FLAGS
              -Qunused-arguments
              -Wno-missing-braces)