diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html
index 6b93e9c..8f352ea 100644
--- a/docs/ProgrammersManual.html
+++ b/docs/ProgrammersManual.html
@@ -3411,7 +3411,7 @@
 <hr>
 <address>
   <a href="http://jigsaw.w3.org/css-validator/check/referer"><img
-  src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!"></a>
+  src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a>
   <a href="http://validator.w3.org/check/referer"><img
   src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01 Strict"></a>