diff --git a/docs/tutorial/LangImpl3.html b/docs/tutorial/LangImpl3.html
index 0258961ce65..b29f422a9e8 100644
--- a/docs/tutorial/LangImpl3.html
+++ b/docs/tutorial/LangImpl3.html
@@ -47,6 +47,9 @@ demonstrate how easy it is to use.  It's much more work to build a lexer and
 parser than it is to generate LLVM IR code. :)
 </p>
 
+<p><b>Please note</b>: the code in this chapter and later require LLVM 2.2 or
+LLVM SVN to work.  LLVM 2.1 and before will not work with it.</p>
+
 </div>
 
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