diff --git a/docs/HowToSubmitABug.html b/docs/HowToSubmitABug.html
index 77bf040..7bc6414 100644
--- a/docs/HowToSubmitABug.html
+++ b/docs/HowToSubmitABug.html
@@ -128,7 +128,10 @@
 behind a <tt><i>foo</i>.i</tt> file (containing preprocessed C source code) and
 possibly <tt><i>foo</i>.s</tt> (containing LLVM assembly code), for each
 compiled <tt><i>foo</i>.c</tt> file. Send us the <tt><i>foo</i>.i</tt> file,
-along with a brief description of the error it caused.</p>
+along with a brief description of the error it caused. A tool that might help
+you reduce a front-end testcase to a more manageable size is
+<a href="http://delta.tigris.org/">delta</a>.
+</p>
 
 </div>