diff --git a/nt/ChangeLog b/nt/ChangeLog
index ceac49e7376..3fffa106c89 100644
--- a/nt/ChangeLog
+++ b/nt/ChangeLog
@@ -1,5 +1,6 @@
 2013-08-25  Glenn Morris  <rgm@gnu.org>
 
+	* INSTALL: Refer to INSTALL.MSYS.
 	* configure.bat: Disable it.
 
 2013-08-04  Eli Zaretskii  <eliz@gnu.org>
diff --git a/nt/INSTALL b/nt/INSTALL
index 8abd8aff920..594ff9ff752 100644
--- a/nt/INSTALL
+++ b/nt/INSTALL
@@ -4,6 +4,9 @@
   Copyright (C) 2001-2013 Free Software Foundation, Inc.
   See the end of the file for license conditions.
 
+*** This method of building Emacs is no longer supported. ***
+    Instead, see INSTALL.MSYS.
+
 * For the impatient
 
   Here are the concise instructions for configuring and building the