diff --git a/eo/doc/mainpage.html b/eo/doc/mainpage.html
index 3811447cb..bd5838461 100644
--- a/eo/doc/mainpage.html
+++ b/eo/doc/mainpage.html
@@ -79,7 +79,7 @@
             </p>
             <ul>
               <li>Linux x86 with GCC 3.x and 4.x</li>
-              <li>Linux x86_64 with GCC 3.x</li>
+              <li>Linux x86_64 with GCC 3.x (t-MGE1bit fails)</li>
               <li>MacOS X/Darwin PowerPC with GCC 3.3</li>
               <li>Solaris SPARC with GCC 3.3.2</li>
               <li>Solaris x86 with GCC 3.3.2 (t-MGE1bit fails)</li>