diff --git a/assocdean250410.html b/assocdean250410.html
index e9586524..c0bf7786 100644
--- a/assocdean250410.html
+++ b/assocdean250410.html
@@ -55,7 +55,7 @@
 			hash: true,
 			controlsLayout: 'edges',
 			slideNumber: true,
-			backgroundTransition: 'fade',
+			transition: 'fade',
 
 			// Learn about plugins: https://revealjs.com/plugins/
 			plugins: [ RevealMarkdown, RevealHighlight, RevealNotes, RevealAttribution, RevealMenu, RevealFullscreen ]