diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index 1ab3a7f79..b8203bf08 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -278,7 +278,6 @@ struct init_cygheap
   size_t sthreads;
   int open_fhs;
   pid_t pid;			/* my pid */
-  const char *system_root;
   void close_ctty ();
 };