diff --git a/src/resources/js/download.js b/src/resources/js/download.js
index 7cfb0a6..1863ad6 100644
--- a/src/resources/js/download.js
+++ b/src/resources/js/download.js
@@ -154,7 +154,7 @@ $(function() {
 
 		disableFields(true);
 
-		if (fathom !== undefined) {
+		if (typeof fathom !== 'undefined') {
 			fathom.trackGoal('U9K2UTFV', 0);
 		}