diff --git a/Source/ThirdParty/jsep.js b/Source/ThirdParty/jsep.js
index 2ba42bd1d12..c7a175a5657 100644
--- a/Source/ThirdParty/jsep.js
+++ b/Source/ThirdParty/jsep.js
@@ -680,9 +680,8 @@ define(function() {
 	}
 }(this));
 
-    if (typeof jsep.noConflict === 'function') {
+    // `jsep` only exists when running in the browser
+    if (typeof jsep !== 'undefined') {
         return jsep.noConflict();
     }
-
-    return jsep;
 });