diff --git a/app/static/custom/js/custom.js b/app/static/custom/js/custom.js
index 67f8f0f..ddd6d7b 100644
--- a/app/static/custom/js/custom.js
+++ b/app/static/custom/js/custom.js
@@ -167,7 +167,7 @@ json_library = {
         return r + (pEnd || '');
     },
     prettyPrint: function(obj) {
-        obj = obj.replace(/u'/g, "\'").replace(/'/g, "\"").replace(/(False|None)/g, "\"$1\"");
+        obj = obj.replace(/"/g, "\\\"").replace(/u'/g, "\'").replace(/'/g, "\"").replace(/(False|None)/g, "\"$1\"");
         var jsonData = JSON.parse(obj);
         var jsonLine = /^( *)("[\w]+": )?("[^"]*"|[\w.+-]*)?([,[{])?$/mg;
             return JSON.stringify(jsonData, null, 3)
@@ -175,4 +175,4 @@ json_library = {
             .replace(/</g, '&lt;').replace(/>/g, '&gt;')
             .replace(jsonLine, json_library.replacer);
         }
-    };
\ No newline at end of file
+    };