diff --git a/.changeset/add-cli-remove-trailing-period.md b/.changeset/add-cli-remove-trailing-period.md
deleted file mode 100644
index ec60d48..0000000
--- a/.changeset/add-cli-remove-trailing-period.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-"@srtkit/cli": patch
----
-
-Add `--remove-trailing-period` flag to clean command
-
-- Add new CLI option `--remove-trailing-period` to remove trailing periods (`。` or `.`) at the end of cues
diff --git a/.changeset/add-remove-trailing-period.md b/.changeset/add-remove-trailing-period.md
deleted file mode 100644
index 38b02ea..0000000
--- a/.changeset/add-remove-trailing-period.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-"@srtkit/core": patch
----
-
-Fix `removeTrailingPeriod` regex to handle trailing whitespace
-
-- Fix regex pattern from `/[。.]$/` to `/[。.]\s*$/` to correctly remove trailing periods followed by whitespace
diff --git a/packages/cli/README.md b/packages/cli/README.md
index e0d39e9..8f93e5b 100644
--- a/packages/cli/README.md
+++ b/packages/cli/README.md
@@ -76,8 +76,6 @@ cues, speaker labels, music cues, and more.
 
 - `--merge-same-text` — Merge consecutive cues with identical text Required: No
 
-- `--remove-trailing-period` — Remove trailing period (。 or .) at the end of cues Required: No
-
 - `--normalize-text-case` — Change fully UPPERCASE cues to normal case Required: No
 
 ---
diff --git a/packages/cli/src/commands/clean.ts b/packages/cli/src/commands/clean.ts
index 6d1c811..40e05d8 100644
--- a/packages/cli/src/commands/clean.ts
+++ b/packages/cli/src/commands/clean.ts
@@ -40,10 +40,6 @@ export class CleanCommand extends Command {
         description: 'Merge consecutive cues with identical text',
     })
 
-    removeTrailingPeriod = Option.Boolean('--remove-trailing-period', false, {
-        description: 'Remove trailing period (`。` or `.`) at the end of cues',
-    })
-
     normalizeTextCase = Option.Boolean('--normalize-text-case', false, {
         description: 'Change fully UPPERCASE cues to normal case',
     })
@@ -59,7 +55,6 @@ export class CleanCommand extends Command {
             removeMusicCues: this.removeMusicCues,
             removeLineBreaks: this.removeLineBreaks,
             mergeSameText: this.mergeSameText,
-            removeTrailingPeriod: this.removeTrailingPeriod,
             normalizeTextCase: this.normalizeTextCase,
         })
 
diff --git a/packages/core/src/features/clean.ts b/packages/core/src/features/clean.ts
index 646484c..17d374c 100644
--- a/packages/core/src/features/clean.ts
+++ b/packages/core/src/features/clean.ts
@@ -97,7 +97,7 @@ export const cleanBasic = (subtitle: Subtitle, options?: CleanBasicOptions): Sub
 
         // Remove trailing period (`。` or `.`)
         if (options?.removeTrailingPeriod) {
-            text = text.replace(/[。.]\s*$/, '')
+            text = text.replace(/[。.]$/, '')
         }
 
         return {
diff --git a/packages/core/test/features/clean.test.ts b/packages/core/test/features/clean.test.ts
index 281578e..13bcbac 100644
--- a/packages/core/test/features/clean.test.ts
+++ b/packages/core/test/features/clean.test.ts
@@ -114,28 +114,6 @@ describe('cleanBasic', () => {
         expect(result).toMatchSnapshot()
     })
 
-    it('should remove trailing period', () => {
-        const subtitle = [
-            createEntry('1', 'Hello World.'),
-            createEntry('2', 'This is a test.'),
-            createEntry('3', 'No period here'),
-            createEntry('4', 'Multiple sentences. End here.'),
-            createEntry('5', '你好世界。'),
-            createEntry('6', '没有句号'),
-            createEntry('7', '  With whitespace.  '),
-        ]
-
-        const result = cleanBasic(subtitle, { removeTrailingPeriod: true })
-
-        expect(result[0].text).toBe('Hello World')
-        expect(result[1].text).toBe('This is a test')
-        expect(result[2].text).toBe('No period here')
-        expect(result[3].text).toBe('Multiple sentences. End here')
-        expect(result[4].text).toBe('你好世界')
-        expect(result[5].text).toBe('没有句号')
-        expect(result[6].text).toBe('With whitespace')
-    })
-
     it('should apply multiple options together', () => {
         const subtitle = [
             createEntry('1', '  JOHN: Hello [phone] World  \n'),