diff --git a/src/util/macros.h b/src/util/macros.h
index f5f099bb594..55dd80c870b 100644
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -72,7 +72,7 @@
  * Unreachable macro. Useful for suppressing "control reaches end of non-void
  * function" warnings.
  */
-#ifdef HAVE___BUILTIN_UNREACHABLE
+#if defined(HAVE___BUILTIN_UNREACHABLE) || __has_builtin(__builtin_unreachable)
 #define unreachable(str)    \
 do {                        \
    assert(!str);            \