diff --git a/documentation/src/html_footer b/documentation/src/html_footer
index 401466658..ebcf443a0 100644
--- a/documentation/src/html_footer
+++ b/documentation/src/html_footer
@@ -1,7 +1,7 @@
 <hr>
 <address><small>
 <!-- $datetime. -->
-<a href="http://www.fltk.org"><img src="tiny.gif" align="bottom" alt="FLTK"></a>
+<a href="http://www.fltk.org"><img src="tiny.png" align="bottom" alt="FLTK"></a>
 &copy; 1998-2010 by Bill Spitzak and others.&nbsp;&nbsp;&nbsp;
 Permission is granted to reproduce this manual or any portion for
 any purpose, provided this copyright and permission notice are preserved.