diff --git a/doc/linkchecker.1.html.diff b/doc/linkchecker.1.html.diff
deleted file mode 100644
index 73215803..00000000
--- a/doc/linkchecker.1.html.diff
+++ /dev/null
@@ -1,80 +0,0 @@
---- linkchecker.1.html.orig 2011-06-14 21:14:55.016011206 +0200
-+++ linkchecker.1.html 2011-06-14 21:17:07.108913849 +0200
-@@ -38,7 +38,7 @@
-
- The most common use checks the given domain recursively, plus any
- URL pointing outside of the domain:
--
linkchecker http://www.example.net/
-+
linkchecker http://www.example.net/
-
-
- Beware that this checks the whole site which can have thousands of URLs.
-@@ -59,15 +59,15 @@
-
-
- You can skip the http:// url part if the domain starts with www.:
--
linkchecker www.example.com
-+
linkchecker www.example.com
-
-
- You can skip the ftp:// url part if the domain starts with ftp.:
--
linkchecker -r0 ftp.example.org
-+
linkchecker -r0 ftp.example.org
-
-
- Generate a sitemap graph and convert it with the graphviz dot utility:
--
linkchecker -odot -v www.example.com | dot -Tps > sitemap.ps
-+
linkchecker -odot -v www.example.com | dot -Tps > sitemap.ps
-
- OPTIONS
-
-@@ -302,8 +302,8 @@
-
- Multiple entries are separated by a blank line.
- The example below will send two cookies to all URLs starting with
--http://example.com/hello/ and one to all URLs starting
--with https://example.org/:
-+http://example.com/hello/ and one to all URLs starting
-+with https://example.org/:
-
-
Host: example.com
-
Path: /hello
-@@ -326,15 +326,15 @@
- variables to ignore any proxy settings for these domains.
- Setting a HTTP proxy on Unix for example looks like this:
-
--
export http_proxy="http://proxy.example.com:8080"
-+
export http_proxy="http://proxy.example.com:8080"
-
- Proxy authentication is also supported:
-
--
export http_proxy="http://user1:mypass@proxy.example.org:8081"
-+
export http_proxy="http://user1:mypass@proxy.example.org:8081"
-
- Setting a proxy on the Windows command prompt:
-
--
set http_proxy=http://proxy.example.com:8080
-+
set http_proxy=http://proxy.example.com:8080
-
-
-
PERFORMED CHECKS
-@@ -470,8 +470,8 @@
- NOTES
-
- URLs on the commandline starting with ftp. are treated like
--ftp://ftp., URLs starting with www. are treated like
--http://www..
-+ftp://ftp., URLs starting with www. are treated like
-+http://www..
- You can also give local files as arguments.
-
- If you have your system configured to automatically establish a
-@@ -584,7 +584,7 @@
-
-
- This document was created by
--man2html,
-+man2html,
- using the manual pages.
-