diff --git a/src/themes/default/elements/reveal.variables b/src/themes/default/elements/reveal.variables
index 03487019a..5af2923f5 100644
--- a/src/themes/default/elements/reveal.variables
+++ b/src/themes/default/elements/reveal.variables
@@ -5,7 +5,7 @@
 @transitionDelay: 0.15s;
 @transitionDuration: 0.8s;
 @transitionEasing: cubic-bezier(0.175, 0.885, 0.320, 1);
-@transition: all @defaultDuration @defaultEasing @transitionDelay;
+@transition: all @transitionDuration @defaultEasing @transitionDelay;
 
 @bottomZIndex: 2;
 @topZIndex: 3;