diff --git a/llvm/docs/UsingLibraries.html b/llvm/docs/UsingLibraries.html
index a9b6b07f5fdc..9cb383d31c75 100644
--- a/llvm/docs/UsingLibraries.html
+++ b/llvm/docs/UsingLibraries.html
@@ -23,6 +23,8 @@
   <p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a></p>
 </div>
 
+Warning: This document is out of date, please see <a href="CommandGuide/html/llvm-config.html">llvm-config</a> for more information.
+
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 <div class="doc_section"><a name="abstract">Abstract</a></div>
 <div class="doc_text">