diff --git a/README.md b/README.md
index 6c07a33a0630ef802f628be344da076aeed26cda..0d6e3acabf266b64897e4b42702b29b0e1d36c9b 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,8 @@ Reveal.initialize({
 });
 ```
 
+Note that the new default vertical centering option will break compatibility with slides that were using transitions with backgrounds (`cube` and `page`). To restore the previous behavior, set `center` to `false`.
+
 ### Dependencies
 
 Reveal.js doesn't _rely_ on any third party scripts to work but a few optional libraries are included by default. These libraries are loaded as dependencies in the order they appear, for example:
diff --git a/index.html b/index.html
index 0ba0e5197710dfbf18b02326463e483495da5493..c016179193e86e8ac369b2b2a4bf1a0da3657b3a 100644
--- a/index.html
+++ b/index.html
@@ -164,7 +164,7 @@
 						<a href="?theme=beige#/themes">Beige</a> -
 						<a href="?theme=simple#/themes">Simple</a> -
 						<a href="?theme=serif#/themes">Serif</a> -
-						<a href="?theme=night#/night">Night</a> -
+						<a href="?theme=night#/themes">Night</a> -
 						<a href="?#/themes">Default</a>
 					</p>
 					<p>