diff --git a/tradewind.js b/tradewind.js
index 841c66b..a3d9540 100644
--- a/tradewind.js
+++ b/tradewind.js
@@ -399,7 +399,7 @@
         var newVals = applyAnimationCss(instructions);
         applyFinalCss(newVals);
         finalPadding = locals.timing * 1000 + tradeWind.padding;
-        if (!Modernizr.csstransitions) {
+        if (w.Modernizr && !Modernizr.csstransitions) {
             finalPadding = tradeWind.padding;
         }
         setTimeout(function() {