diff --git a/2020/ferguson1/index.html b/2020/ferguson1/index.html
index b7ddd8a2c..78d579c05 100644
--- a/2020/ferguson1/index.html
+++ b/2020/ferguson1/index.html
@@ -913,7 +913,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="chocolate-cake.html">chocolate-cake.html</a> - Double-layered Chocolate Fudge Cake Recipe</li>
 <li><a href="crazy.log.html">crazy.log.html</a> - explains various odd screen dumps</li>
 <li><a href="gameplay.html">gameplay.html</a> - many different gameplay modes described</li>
-<li><a href="obfuscation.html">obfuscation.html</a> - Obfuscation information about the code</li>
+<li><a href="obfuscation.html">obfuscation.html</a> - detailed information about the obfuscation of the code</li>
 <li><a href="terminals.html">terminals.html</a> - terminal capabilities and dimensions and colours</li>
 <li><a href="troubleshooting.html">troubleshooting.html</a> - troubleshooting Snake</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/prog.2.c">prog.2.c</a> - source code with more digraphs</li>