diff --git a/src/helpers/date-helper.ts b/src/helpers/date-helper.ts
index 1b2a0f5c4..54e1c967a 100644
--- a/src/helpers/date-helper.ts
+++ b/src/helpers/date-helper.ts
@@ -111,7 +111,7 @@ export const ganttDateRange = (
         "day"
       );
       newEndDate = startOfDate(newEndDate, "day");
-      newEndDate = addToDate(newEndDate, 1.5, "month");
+      newEndDate = addToDate(newEndDate, 2, "month");
       break;
     case ViewMode.Day:
       newStartDate = startOfDate(newStartDate, "day");