diff --git a/plugin/math/math.js b/plugin/math/math.js
index 104d0e5..4e3402e 100755
--- a/plugin/math/math.js
+++ b/plugin/math/math.js
@@ -52,7 +52,7 @@ var RevealMath = window.RevealMath || (function(){
 		// IE
 		script.onreadystatechange = function() {
 			if ( this.readyState === 'loaded' ) {
-				finish.call();
+				finish();
 			}
 		}