diff --git a/clang/lib/Headers/stdalign.h b/clang/lib/Headers/stdalign.h
index 56cdfa52d4baf..158508e65d2b3 100644
--- a/clang/lib/Headers/stdalign.h
+++ b/clang/lib/Headers/stdalign.h
@@ -10,10 +10,6 @@
 #ifndef __STDALIGN_H
 #define __STDALIGN_H
 
-#if defined(__MVS__) && __has_include_next(<stdalign.h>)
-#include_next <stdalign.h>
-#else
-
 #if defined(__cplusplus) ||                                                    \
     (defined(__STDC_VERSION__) && __STDC_VERSION__ < 202311L)
 #ifndef __cplusplus
@@ -25,5 +21,4 @@
 #define __alignof_is_defined 1
 #endif /* __STDC_VERSION__ */
 
-#endif /* __MVS__ */
 #endif /* __STDALIGN_H */