diff --git a/osdep/compiler.h b/osdep/compiler.h
index 37431e60eb..2908f6e0f2 100644
--- a/osdep/compiler.h
+++ b/osdep/compiler.h
@@ -19,12 +19,6 @@
 #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (gnu_printf, a1, a2)))
 #endif
 
-#if __STDC_VERSION__ >= 201112L
-#include <stdalign.h>
-#else
-#define alignof(x) (offsetof(struct {char unalign_; x u;}, u))
-#endif
-
 #ifdef __GNUC__
 #define MP_ASSERT_UNREACHABLE() (assert(!"unreachable"), __builtin_unreachable())
 #else