diff --git a/CHECKLST.txt b/CHECKLST.txt
index b5d13191..40224951 100644
--- a/CHECKLST.txt
+++ b/CHECKLST.txt
@@ -159,6 +159,9 @@ of the tag.
  - Create subdir `htmldoc' in the release directory, which should
    contain exactly the same set of HTML files that went into
    puttydoc.zip.
+    + It also needs a copy of sitestyle.css, because the online
+      versions of the HTML docs will link to this (although the
+      zipped form should be self-contained).
 
  - Now the whole release directory should be present and correct.
    Upload to ixion:www/putty/<ver>, upload to
diff --git a/doc/site.but b/doc/site.but
index 2c7a151c..a74f4dfe 100644
--- a/doc/site.but
+++ b/doc/site.but
@@ -1,4 +1,4 @@
 \# Additional configuration for the version of the PuTTY docs
 \# actually published as HTML on the website.
 
-\cfg{xhtml-head-end}{<link rel='stylesheet' href='../../sitestyle.css' type='text/css' />}
+\cfg{xhtml-head-end}{<link rel='stylesheet' href='sitestyle.css' type='text/css' />}