diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 6f19da05a5..1841b2bfe4 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -3063,7 +3063,7 @@ qemu-kvm -net nic,model=? /dev/null
   <devices>
     <video>
       <model type='vga' vram='8192' heads='1'>
-        <acceleration accel3d='yes' accel3d='yes'/>
+        <acceleration accel3d='yes' accel2d='yes'/>
       </model>
     </video>
   </devices>