diff --git a/ext/standard/filestat.c b/ext/standard/filestat.c
index 0d79bba461bea..e537f35829106 100644
--- a/ext/standard/filestat.c
+++ b/ext/standard/filestat.c
@@ -42,6 +42,16 @@
 #  include <os2.h>
 #endif
 
+#if defined(__APPLE__)
+  /*
+   Apple statvfs has an interger overflow in libc copying to statvfs.
+   cvt_statfs_to_statvfs(struct statfs *from, struct statvfs *to) {
+   to->f_blocks = (fsblkcnt_t)from->f_blocks;
+   */
+#  undef HAVE_SYS_STATVFS_H
+#  undef HAVE_STATVFS
+#endif
+
 #if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
 # include <sys/statvfs.h>
 #elif defined(HAVE_SYS_STATFS_H) && defined(HAVE_STATFS)