diff --git a/src/datetime.test.js b/src/datetime.test.js
index 8e33489..ab368ae 100644
--- a/src/datetime.test.js
+++ b/src/datetime.test.js
@@ -1,7 +1,7 @@
 import { describe, expect, test } from 'vitest'
 
 import { datetime, datetimeTz, tzOffset, utc } from './index.js'
-import { getNormalizeDay } from './utils/date.js'
+import { getNormalizedDay } from './utils/date.js'
 
 const togoIndependanceDay = new Date(1960, 3, 27)
 const date = togoIndependanceDay // alias for the sake of brevity
@@ -90,7 +90,7 @@ describe('datetime', () => {
 
     // 1st day of the year is after Thurdsay
     test('week on 2021-01-01 is 2020-W53', () => {
-      expect(getNormalizeDay(january1st2021)).toBeGreaterThan(4)
+      expect(getNormalizedDay(january1st2021)).toBeGreaterThan(4)
       expect(datetime(january1st2021, 'week')).toBe('2020-W53')
     })
 
@@ -109,7 +109,7 @@ describe('datetime', () => {
     // 1st day of the month is after Thurdsay, but it’s not in January
     test('week on 2021-03-01 is 2021-W17', () => {
       const march1st2021 = new Date(2021, 4, 1)
-      expect(getNormalizeDay(march1st2021)).toBeGreaterThan(4)
+      expect(getNormalizedDay(march1st2021)).toBeGreaterThan(4)
       expect(datetime(march1st2021, 'week')).toBe('2021-W17')
     })
 
diff --git a/src/utils/date.js b/src/utils/date.js
index ec38e03..a4c5023 100644
--- a/src/utils/date.js
+++ b/src/utils/date.js
@@ -35,7 +35,7 @@ export function daysBetween(date, furtherDate) {
  * @returns {number}
  */
 export function weekNumber(date) {
-  const dayIndex = getNormalizeDay(date)
+  const dayIndex = getNormalizedDay(date)
 
   const sameWeekThursday = new Date(date)
   sameWeekThursday.setDate(date.getDate() + 4 - dayIndex)
@@ -52,4 +52,4 @@ export function weekNumber(date) {
  * @param {Date} date
  * @returns {number}
  */
-export const getNormalizeDay = date => date.getDay() || 7
+export const getNormalizedDay = date => date.getDay() || 7
diff --git a/types/utils/date.d.ts b/types/utils/date.d.ts
index 9ffc910..5bf0563 100644
--- a/types/utils/date.d.ts
+++ b/types/utils/date.d.ts
@@ -18,3 +18,4 @@ export function daysBetween(date: Date, furtherDate: Date): number;
  * @returns {number}
  */
 export function weekNumber(date: Date): number;
+export function getNormalizedDay(date: Date): number;