diff --git a/build/cmake/init.cmake b/build/cmake/init.cmake
index fac86758b6..06cd01906b 100644
--- a/build/cmake/init.cmake
+++ b/build/cmake/init.cmake
@@ -51,10 +51,12 @@ set(wxARCH_SUFFIX)
 
 # TODO: include compiler version in wxCOMPILER_PREFIX ?
 if(WIN32)
-    if(MSVC)
+    if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
         set(wxCOMPILER_PREFIX "vc")
-    elseif(CMAKE_COMPILER_IS_GNUCXX)
+    elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
         set(wxCOMPILER_PREFIX "gcc")
+    elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+        set(wxCOMPILER_PREFIX "clang")
     else()
         message(FATAL_ERROR "Unknown WIN32 compiler type")
     endif()