diff --git a/include/libc-internal.h b/include/libc-internal.h
index b37388e..bca59a4 100644
--- a/include/libc-internal.h
+++ b/include/libc-internal.h
@@ -107,13 +107,4 @@ extern void __init_misc (int, char **, char **);
 #define DIAG_IGNORE_NEEDS_COMMENT(version, option)	\
   _Pragma (_DIAG_STR (GCC diagnostic ignored option))
 
-/* This mirrors the C11 max_align_t type provided by GCC, but it is
-   also available in C99 mode.  The aligned attributes are required
-   because some ABIs have reduced alignment requirements for struct
-   and union members.  */
-typedef struct {
-  long long ll __attribute__ ((__aligned__ (__alignof__ (long long))));
-  long double ld __attribute__ ((__aligned__ (__alignof__ (long double))));
-} libc_max_align_t;
-
 #endif /* _LIBC_INTERNAL  */
diff --git a/include/scratch_buffer.h b/include/scratch_buffer.h
index 6f92694..1a50cdf 100644
--- a/include/scratch_buffer.h
+++ b/include/scratch_buffer.h
@@ -58,17 +58,16 @@
 */
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdlib.h>
 
-#include <libc-internal.h>
-
 /* Scratch buffer.  Must be initialized with scratch_buffer_init
    before its use.  */
 struct scratch_buffer {
   void *data;    /* Pointer to the beginning of the scratch area.  */
   size_t length; /* Allocated space at the data pointer, in bytes.  */
   char __space[1024]
-    __attribute__ ((aligned (__alignof__ (libc_max_align_t))));
+    __attribute__ ((aligned (__alignof__ (max_align_t))));
 };
 
 /* Initializes *BUFFER so that BUFFER->data points to BUFFER->__space