diff --git a/lib/phantomscript.js b/lib/phantomscript.js
index 05cd881995a..890e301feb4 100644
--- a/lib/phantomscript.js
+++ b/lib/phantomscript.js
@@ -46,7 +46,6 @@ var options = {
       , width: width
     }
   , log = logger(options.verbose)
-
 options.sequenceConfig.useMaxWidth = false;
 
 page.content = [
@@ -212,7 +211,7 @@ function executeInPage(data) {
   var xmlSerializer = new XMLSerializer()
     , contents = data.contents
     , sequenceConfig = JSON.stringify(data.sequenceConfig)
-    , ganttConfig = data.ganttConfig
+    , ganttConfig = JSON.stringify(data.ganttConfig).replace(/"(function.*)}"/, "$1")
     , toRemove
     , el
     , elContent