diff --git a/src/helpers/date-helper.ts b/src/helpers/date-helper.ts
index ff1b2f8..343906f 100644
--- a/src/helpers/date-helper.ts
+++ b/src/helpers/date-helper.ts
@@ -125,7 +125,7 @@ export const getLocaleMonth = (date: Date, locale: string) => {
  */
 const getMonday = (date: Date) => {
   const day = date.getDay();
-  const diff = date.getDate() - day + (day == 0 ? -6 : 1); // adjust when day is sunday
+  const diff = date.getDate() - day + (day === 0 ? -6 : 1); // adjust when day is sunday
   return new Date(date.setDate(diff));
 };