diff --git a/plugins/clang/clangsupport.cpp b/plugins/clang/clangsupport.cpp
--- a/plugins/clang/clangsupport.cpp
+++ b/plugins/clang/clangsupport.cpp
@@ -178,8 +178,8 @@
 {
     {
         const auto builtinDir = ClangIntegration::DUChainUtils::clangBuiltinIncludePath();
-        if (!QFile::exists(builtinDir + QLatin1String("/varargs.h"))) {
-            setErrorDescription(i18n("The clang builtin include path \"%1\" is invalid (missing varargs.h header).\n"
+        if (!QFile::exists(builtinDir + QLatin1String("/cpuid.h"))) {
+            setErrorDescription(i18n("The clang builtin include path \"%1\" is invalid (missing cpuid.h header).\n"
                                      "Try setting the KDEV_CLANG_BUILTIN_DIR environment variable manually to fix this.\n"
                                      "See also: https://bugs.kde.org/show_bug.cgi?id=393779", builtinDir));
             return;