diff --git a/2020/ferguson2/.entry.json b/2020/ferguson2/.entry.json
index 6adb554be..6442cb5ec 100644
--- a/2020/ferguson2/.entry.json
+++ b/2020/ferguson2/.entry.json
@@ -42,7 +42,7 @@
 	    "entry_text" : "original source"
 	},
 	{
-	    "file_path" : "encrypted.html",
+	    "file_path" : "enigma.html",
 	    "inventory_order" : 100,
 	    "OK_to_edit" : true,
 	    "display_as" : "text",
diff --git a/2020/ferguson2/Makefile b/2020/ferguson2/Makefile
index 815646b30..209821d12 100644
--- a/2020/ferguson2/Makefile
+++ b/2020/ferguson2/Makefile
@@ -114,7 +114,7 @@ PROG= prog
 OBJ= ${PROG}.o
 DATA= enigma.1 input.txt obfuscation.key \
 	obfuscation.md obfuscation.txt recode.1 recode.md \
-	try.this.txt encrypted.html
+	try.this.txt enigma.html
 TARGET= ${PROG} recode
 #
 ALT_OBJ= ${PROG}.alt.o
diff --git a/2020/ferguson2/README.md b/2020/ferguson2/README.md
index 090407f7b..adae6402a 100644
--- a/2020/ferguson2/README.md
+++ b/2020/ferguson2/README.md
@@ -119,7 +119,7 @@ There is a good deal of useful documentation that is provided with this entry:
     - Some useful information about [recode.c](%%REPO_URL%%/2020/ferguson2/recode.c)
 
 
-* [encrypted.html][]
+* [enigma.html][]
     - NOTE: see [recode.html][] (or [recode.html](recode.html) for details about how to decrypt this!
 
 
diff --git a/2020/ferguson2/encrypted.html b/2020/ferguson2/enigma.html
similarity index 100%
rename from 2020/ferguson2/encrypted.html
rename to 2020/ferguson2/enigma.html
diff --git a/2020/ferguson2/index.html b/2020/ferguson2/index.html
index 73e7ed261..57ccefb32 100644
--- a/2020/ferguson2/index.html
+++ b/2020/ferguson2/index.html
@@ -466,7 +466,7 @@ out! Can you figure out why this works this way?</p>
 <ul>
 <li>Some useful information about <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/recode.c">recode.c</a></li>
 </ul></li>
-<li>[encrypted.html][]
+<li>[enigma.html][]
 <ul>
 <li>NOTE: see <a href="recode.html">recode.html</a> (or <a href="recode.html">recode.html</a> for details about how to decrypt this!</li>
 </ul></li>
@@ -1086,7 +1086,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/prog.alt.c">prog.alt.c</a> - alternate code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/prog.orig.c">prog.orig.c</a> - original source</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/encrypted.html">encrypted.html</a> - secret message in a html file to decrypt</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/enigma.html">enigma.html</a> - secret message in a html file to decrypt</li>
 <li><a href="input.txt">input.txt</a> - sample input</li>
 <li><a href="obfuscation.html">obfuscation.html</a> - about the obfuscation of this entry</li>
 <li><a href="obfuscation.txt">obfuscation.txt</a> - about the obfuscation of this entry - encrypted with entry</li>
diff --git a/2020/ferguson2/recode.html b/2020/ferguson2/recode.html
index 9675a836b..49e0dd71b 100644
--- a/2020/ferguson2/recode.html
+++ b/2020/ferguson2/recode.html
@@ -828,7 +828,7 @@ shouldn’t this entry include something that is fun too? But if that’s the ca
 why on Earth should it be unscrambled? It would be more fun and a great way to
 explore this entry if you have to use the Enigma machine to read the message!</p>
 <p>So this is what I offer: if you take one of the settings below and run the
-Enigma machine simulator on the file [encrypted.html][encrypted.html] you will
+Enigma machine simulator on the file [enigma.html][enigma.html] you will
 unlock a html file with something special in it. I recommend you decrypt it to
 <code>decrypted.html</code> and open it in a web browser.</p>
 <p>The correct settings is listed below but <em>you</em> must determine which one is the
@@ -871,7 +871,7 @@ think that I would give too much away? :)</p>
 the key you wish to select is</p>
 <pre><code>    0EZ4PC1CC0PGTAQSOXWNMDRYKFUZEI</code></pre>
 <p>you can do:</p>
-<pre><code>    ./recode -R0EZ4PC1CC0PGTAQSOXWNMDRYKFUZEI -fencrypted.html | ./prog - 2&gt;/dev/null &gt; decrypted.html</code></pre>
+<pre><code>    ./recode -R0EZ4PC1CC0PGTAQSOXWNMDRYKFUZEI -fenigma.html | ./prog - 2&gt;/dev/null &gt; decrypted.html</code></pre>
 <p>Then open <code>decrypted.html</code> in your browser.</p>
 <hr style="width:10%;text-align:left;margin-left:0">
 <p>Jump to: <a href="#">top</a></p>
diff --git a/2020/ferguson2/recode.md b/2020/ferguson2/recode.md
index 91ed6df3e..a7f4665bf 100644
--- a/2020/ferguson2/recode.md
+++ b/2020/ferguson2/recode.md
@@ -588,7 +588,7 @@ why on Earth should it be unscrambled? It would be more fun and a great way to
 explore this entry if you have to use the Enigma machine to read the message!
 
 So this is what I offer: if you take one of the settings below and run the
-Enigma machine simulator on the file [encrypted.html][encrypted.html] you will
+Enigma machine simulator on the file [enigma.html][enigma.html] you will
 unlock a html file with something special in it. I recommend you decrypt it to
 `decrypted.html` and open it in a web browser.
 
@@ -649,7 +649,7 @@ the key you wish to select is
 you can do:
 
 ``` <!---sh-->
-    ./recode -R0EZ4PC1CC0PGTAQSOXWNMDRYKFUZEI -fencrypted.html | ./prog - 2>/dev/null > decrypted.html
+    ./recode -R0EZ4PC1CC0PGTAQSOXWNMDRYKFUZEI -fenigma.html | ./prog - 2>/dev/null > decrypted.html
 ```
 
 Then open `decrypted.html` in your browser.
diff --git a/tmp/manifest.csv b/tmp/manifest.csv
index 1ab4ced40..8b7814003 100644
--- a/tmp/manifest.csv
+++ b/tmp/manifest.csv
@@ -4169,7 +4169,7 @@
 2020,ferguson2,Makefile,30,true,makefile,true,entry Makefile
 2020,ferguson2,prog.alt.c,40,true,c,true,alternate code
 2020,ferguson2,prog.orig.c,50,false,c,true,original source
-2020,ferguson2,encrypted.html,100,true,text,true,secret message in a html file to decrypt
+2020,ferguson2,enigma.html,100,true,text,true,secret message in a html file to decrypt
 2020,ferguson2,input.txt,100,true,text,false,sample input
 2020,ferguson2,obfuscation.html,100,true,html,false,about the obfuscation of this entry
 2020,ferguson2,obfuscation.txt,100,true,text,false,about the obfuscation of this entry - encrypted with entry
diff --git a/tmp/manifest.numbers b/tmp/manifest.numbers
index ac7ba8f5a..428e2d968 100644
Binary files a/tmp/manifest.numbers and b/tmp/manifest.numbers differ
diff --git a/tmp/path_list.found.txt b/tmp/path_list.found.txt
index 52ebf5aa8..8de89ca9e 100644
--- a/tmp/path_list.found.txt
+++ b/tmp/path_list.found.txt
@@ -4170,8 +4170,8 @@
 2020/ferguson2/2020_ferguson2.tar.bz2
 2020/ferguson2/Makefile
 2020/ferguson2/README.md
-2020/ferguson2/encrypted.html
 2020/ferguson2/enigma.1
+2020/ferguson2/enigma.html
 2020/ferguson2/index.html
 2020/ferguson2/input.txt
 2020/ferguson2/key.txt
diff --git a/tmp/path_list.manifest.txt b/tmp/path_list.manifest.txt
index 52ebf5aa8..8de89ca9e 100644
--- a/tmp/path_list.manifest.txt
+++ b/tmp/path_list.manifest.txt
@@ -4170,8 +4170,8 @@
 2020/ferguson2/2020_ferguson2.tar.bz2
 2020/ferguson2/Makefile
 2020/ferguson2/README.md
-2020/ferguson2/encrypted.html
 2020/ferguson2/enigma.1
+2020/ferguson2/enigma.html
 2020/ferguson2/index.html
 2020/ferguson2/input.txt
 2020/ferguson2/key.txt
diff --git a/tmp/path_list.required.txt b/tmp/path_list.required.txt
index 9a1457f5d..d7ca39932 100644
--- a/tmp/path_list.required.txt
+++ b/tmp/path_list.required.txt
@@ -3198,8 +3198,8 @@
 2020/ferguson2/.gitignore
 2020/ferguson2/Makefile
 2020/ferguson2/README.md
-2020/ferguson2/encrypted.html
 2020/ferguson2/enigma.1
+2020/ferguson2/enigma.html
 2020/ferguson2/input.txt
 2020/ferguson2/key.txt
 2020/ferguson2/obfuscation.html