diff --git a/www/common/sframe-common-codemirror.js b/www/common/sframe-common-codemirror.js
index 60940b470..7422c91f1 100644
--- a/www/common/sframe-common-codemirror.js
+++ b/www/common/sframe-common-codemirror.js
@@ -145,6 +145,7 @@ define([
         };
 
         var editor = exp.editor = CMeditor.fromTextArea($textarea[0], {
+            allowDropFileTypes: [],
             lineNumbers: true,
             lineWrapping: true,
             autoCloseBrackets: true,