diff --git a/player/js/utils/expressions/ExpressionManager.js b/player/js/utils/expressions/ExpressionManager.js
index a5743eb..b92d099 100644
--- a/player/js/utils/expressions/ExpressionManager.js
+++ b/player/js/utils/expressions/ExpressionManager.js
@@ -410,6 +410,7 @@
     var velocityAtTime;
 
     var scoped_bm_rt;
+    val = val.replace(/(\\?"|')((http)(s)?(:\/))?\/.*?(\\?"|')/g, "\"\""); // deter potential network calls
     var expression_function = eval('[function _expression_function(){' + val + ';scoped_bm_rt=$bm_rt}]')[0]; // eslint-disable-line no-eval
     var numKeys = property.kf ? data.k.length : 0;