diff --git a/packages/mermaid/src/diagrams/gantt/ganttDb.js b/packages/mermaid/src/diagrams/gantt/ganttDb.js
index 034a4d2b9..3ae55fb25 100644
--- a/packages/mermaid/src/diagrams/gantt/ganttDb.js
+++ b/packages/mermaid/src/diagrams/gantt/ganttDb.js
@@ -33,7 +33,7 @@ let sections = [];
 let tasks = [];
 let currentSection = '';
 let displayMode = '';
-const tags = ['active', 'done', 'crit', 'milestone', 'vert', 'special'];
+const tags = ['active', 'done', 'crit', 'milestone', 'vert'];
 let funs = [];
 let inclusiveEndDates = false;
 let topAxis = false;
@@ -422,7 +422,7 @@ const compileData = function (prevTask, dataStr) {
 
   const task = {};
 
-  // Get tags like active, done, crit, milestone, and special
+  // Get tags like active, done, crit, milestone, and vert
   getTaskTags(data, task, tags);
 
   for (let i = 0; i < data.length; i++) {
@@ -470,7 +470,7 @@ const parseData = function (prevTaskId, dataStr) {
 
   const task = {};
 
-  // Get tags like active, done, crit, milestone, and special
+  // Get tags like active, done, crit, milestone, and vert
   getTaskTags(data, task, tags);
 
   for (let i = 0; i < data.length; i++) {
@@ -538,7 +538,6 @@ export const addTask = function (descr, data) {
   rawTask.done = taskInfo.done;
   rawTask.crit = taskInfo.crit;
   rawTask.milestone = taskInfo.milestone;
-  rawTask.special = taskInfo.special;
   rawTask.vert = taskInfo.vert;
   rawTask.order = lastOrder;
 
@@ -572,7 +571,6 @@ export const addTaskOrg = function (descr, data) {
   newTask.done = taskInfo.done;
   newTask.crit = taskInfo.crit;
   newTask.milestone = taskInfo.milestone;
-  newTask.special = taskInfo.special;
   newTask.vert = taskInfo.vert;
   lastTask = newTask;
   tasks.push(newTask);