diff --git a/packages/mermaid/src/diagrams/gantt/ganttDb.js b/packages/mermaid/src/diagrams/gantt/ganttDb.js
index 6d0c21b54..27d622eeb 100644
--- a/packages/mermaid/src/diagrams/gantt/ganttDb.js
+++ b/packages/mermaid/src/diagrams/gantt/ganttDb.js
@@ -172,8 +172,8 @@ export const isInvalidDate = function (date, dateFormat, excludes, includes) {
   }
   if (
     excludes.includes('weekends') &&
-    (date.isoWeekday() == WEEKEND_START_DAY[weekend] ||
-      date.isoWeekday() == WEEKEND_START_DAY[weekend] + 1)
+    (date.isoWeekday() === WEEKEND_START_DAY[weekend] ||
+      date.isoWeekday() === WEEKEND_START_DAY[weekend] + 1)
   ) {
     return true;
   }
@@ -195,10 +195,6 @@ export const setWeekend = function (startDay) {
   weekend = startDay;
 };
 
-export const getWeekend = function () {
-  return weekend;
-};
-
 /**
  * TODO: fully document what this function does and what types it accepts
  *
@@ -797,7 +793,6 @@ export default {
   setWeekday,
   getWeekday,
   setWeekend,
-  getWeekend,
 };
 
 /**