diff --git a/xxhash.h b/xxhash.h
index 63855a0c..c3ed9985 100644
--- a/xxhash.h
+++ b/xxhash.h
@@ -1688,8 +1688,7 @@ struct XXH64_state_s {
 #ifndef XXH_NO_XXH3
 
 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* >= C11 */
-#  include <stdalign.h>
-#  define XXH_ALIGN(n)      alignas(n)
+#  define XXH_ALIGN(n)      _Alignas(n)
 #elif defined(__cplusplus) && (__cplusplus >= 201103L) /* >= C++11 */
 /* In C++ alignas() is a keyword */
 #  define XXH_ALIGN(n)      alignas(n)