diff --git a/docs/shading.html b/docs/shading.html
index aa19c88d86d..99342a329f7 100644
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -45,6 +45,7 @@ in Mesa:
 <li>Linking of multiple shaders is not supported
 <li>gl_ClipVertex
 <li>The derivative functions such as dFdx() are not implemented
+<li>The inverse trig functions asin(), acos(), and atan() are not implemented
 </ul>
 
 <p>