diff --git a/cmake/QtBuild.cmake b/cmake/QtBuild.cmake
index 68729fe351..f51e84b19a 100644
--- a/cmake/QtBuild.cmake
+++ b/cmake/QtBuild.cmake
@@ -101,10 +101,13 @@ if(WIN32)
     endif()
     if(MSVC)
         set(QT_QMAKE_TARGET_MKSPEC win32-msvc)
-    elseif(CLANG)
-        set(QT_QMAKE_TARGET_MKSPEC win32-clang)
+    elseif(CLANG AND MINGW)
+        set(QT_QMAKE_TARGET_MKSPEC win32-clang-g++)
     elseif(MINGW)
         set(QT_QMAKE_TARGET_MKSPEC win32-g++)
+    endif()
+
+    if (MINGW)
         list(APPEND QT_DEFAULT_PLATFORM_DEFINITIONS _WIN32_WINNT=0x0601)
     endif()
 elseif(LINUX)