diff --git a/master/coords.html b/master/coords.html
index 02dda257..22d9150e 100644
--- a/master/coords.html
+++ b/master/coords.html
@@ -109,9 +109,9 @@ <h2 id="ComputingAViewportsTransform">Computing the equivalent transform of an S
   (<var>e-width</var> - <var>vb-width</var> * <var>scale-x</var>) / 2 to <var>translate-x</var>.</li>
   <li>If <var>align</var> contains 'xMax', add
   (<var>e-width</var> - <var>vb-width</var> * <var>scale-x</var>) to <var>translate-x</var>.</li>
-  <li>If <var>align</var> contains 'yMid', add
+  <li>If <var>align</var> contains 'YMid', add
   (<var>e-height</var> - <var>vb-height</var> * <var>scale-y</var>) / 2 to <var>translate-y</var>.</li>
-  <li>If <var>align</var> contains 'yMax', add
+  <li>If <var>align</var> contains 'YMax', add
   (<var>e-height</var> - <var>vb-height</var> * <var>scale-y</var>) to <var>translate-y.</var></li>
 </ol>