diff --git a/docs/en/Plugin.md b/docs/en/Plugin.md
index 506e6a992..b0f6e950f 100644
--- a/docs/en/Plugin.md
+++ b/docs/en/Plugin.md
@@ -291,9 +291,9 @@ dayjs('2018-06-27').week(5) // set week
 - WeekDay adds `.weekday()` API to get or set locale aware day of the week.
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday
diff --git a/docs/es-es/Plugin.md b/docs/es-es/Plugin.md
index fe05f0806..95b858ef6 100644
--- a/docs/es-es/Plugin.md
+++ b/docs/es-es/Plugin.md
@@ -287,9 +287,9 @@ dayjs('2018-06-27').week(5) // set week
 - WeekDay adds `.weekday()` API to get or set locale aware day of the week.
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday
diff --git a/docs/ja/Plugin.md b/docs/ja/Plugin.md
index 487674770..6d03f5fa7 100644
--- a/docs/ja/Plugin.md
+++ b/docs/ja/Plugin.md
@@ -296,9 +296,9 @@ dayjs('2018-06-27').week(5) // set week
 - WeekDay adds `.weekday()` API to get or set locale aware day of the week.
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday
diff --git a/docs/ko/Plugin.md b/docs/ko/Plugin.md
index 24e6f521e..ecea0ac33 100644
--- a/docs/ko/Plugin.md
+++ b/docs/ko/Plugin.md
@@ -288,9 +288,9 @@ dayjs('2018-06-27').week(5) // set week
 - WeekDay adds `.weekday()` API to get or set locale aware day of the week.
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday
diff --git a/docs/pt-br/Plugin.md b/docs/pt-br/Plugin.md
index b264d51f5..b3ffd7428 100644
--- a/docs/pt-br/Plugin.md
+++ b/docs/pt-br/Plugin.md
@@ -287,9 +287,9 @@ dayjs('2018-06-27').week(5) // set week
 - WeekDay adds `.weekday()` API to get or set locale aware day of the week.
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday
diff --git a/docs/zh-cn/Plugin.md b/docs/zh-cn/Plugin.md
index 171388d42..54901820d 100644
--- a/docs/zh-cn/Plugin.md
+++ b/docs/zh-cn/Plugin.md
@@ -290,9 +290,9 @@ dayjs('2018-06-27').week(5) // 设置周
 - WeekDay 增加了 `.weekday()` API 来获取或设置当前语言的星期。
 
 ```javascript
-import weekDay from 'dayjs/plugin/weekDay'
+import weekday from 'dayjs/plugin/weekday'
 
-dayjs.extend(weekDay)
+dayjs.extend(weekday)
 // when Monday is the first day of the week
 dayjs().weekday(-7) // last Monday
 dayjs().weekday(7) // next Monday