--- include/xconfig.h.in.orig
+++ include/xconfig.h.in
@@ -147,7 +147,6 @@
 #define HAVE_POLL 1		/* poll() is present in libc */
 #define HAVE_SELECT 1		/* select() is present in libc */
 #define HAVE_LCHOWN 1		/* lchown() is present in libc */
-#define HAVE_SBRK 1		/* sbrk() is present in libc */
 #define HAVE_VA_COPY 1		/* va_copy() is present in varargs.h/stdarg.h */
 #define HAVE_DUP2 1		/* dup2() is present in libc */
 #define HAVE_GETCWD 1		/* POSIX getcwd() is present in libc */