diff --git a/src/mermaidAPI.js b/src/mermaidAPI.js
index ea122371d..948ef1889 100644
--- a/src/mermaidAPI.js
+++ b/src/mermaidAPI.js
@@ -447,6 +447,7 @@ const render = function (id, txt, cb, container) {
 
   if (typeof cb !== 'undefined') {
     cb(svgCode, flowDb.bindFunctions)
+    cb(svgCode, ganttDb.bindFunctions)
   } else {
     logger.warn('CB = undefined!')
   }