diff --git a/aspida.config.js b/aspida.config.js
index 8d41c3a5..b9f7fcdb 100644
--- a/aspida.config.js
+++ b/aspida.config.js
@@ -38,10 +38,5 @@ module.exports = [
     input: 'samples/array-one-of',
     outputEachDir: true,
     openapi: { inputFile: 'samples/array-one-of.yml' }
-  },
-  {
-    input: 'samples/path-at-mark',
-    outputEachDir: true,
-    openapi: { inputFile: 'samples/path-at-mark.yml', replaceLeadingAtMark: '' }
   }
 ]
diff --git a/src/buildTemplate.ts b/src/buildTemplate.ts
index 2ff94b4b..a9138b30 100644
--- a/src/buildTemplate.ts
+++ b/src/buildTemplate.ts
@@ -6,14 +6,11 @@ import { Config } from './getConfig'
 
 const isV3 = (openapi: OpenAPI.Document): openapi is OpenAPIV3.Document => 'openapi' in openapi
 
-export default async ({ input, isYaml, replaceLeadingAtMark }: Config) => {
+export default async ({ input, isYaml }: Config) => {
   const openapi = await parse(input, { parse: { json: !isYaml } })
   const docs = isV3(openapi)
     ? openapi
     : await require('swagger2openapi').convertObj(openapi, { direct: true })
 
-  return buildV3(
-    await resolveExternalRefs(docs, typeof input === 'string' ? input : ''),
-    replaceLeadingAtMark
-  )
+  return buildV3(await resolveExternalRefs(docs, typeof input === 'string' ? input : ''))
 }
diff --git a/src/buildV3.ts b/src/buildV3.ts
index 30b38cb7..b45bd345 100644
--- a/src/buildV3.ts
+++ b/src/buildV3.ts
@@ -25,7 +25,7 @@ const getParamsList = (
   params?: (OpenAPIV3.ReferenceObject | OpenAPIV3.ParameterObject)[]
 ) => params?.map(p => (isRefObject(p) ? resolveParamsRef(openapi, p.$ref) : p)) || []
 
-export default (openapi: OpenAPIV3.Document, replaceLeadingAtMark: string) => {
+export default (openapi: OpenAPIV3.Document) => {
   const files: { file: string[]; methods: string }[] = []
   const schemas = schemas2Props(openapi.components?.schemas, openapi) || []
   const parameters = parameters2Props(openapi.components?.parameters, openapi, false) || []
@@ -56,8 +56,7 @@ export default (openapi: OpenAPIV3.Document, replaceLeadingAtMark: string) => {
                     [] as OpenAPIV3.ParameterObject[]
                   )
                 ],
-                false,
-                replaceLeadingAtMark
+                false
               )
             ),
           'index'
diff --git a/src/builderUtils/getDirName.ts b/src/builderUtils/getDirName.ts
index 971ad0dc..30ec741a 100644
--- a/src/builderUtils/getDirName.ts
+++ b/src/builderUtils/getDirName.ts
@@ -1,16 +1,9 @@
 import { OpenAPIV3 } from 'openapi-types'
 import { getPropertyName, schema2value } from './converters'
 
-export default (
-  text: string,
-  params: OpenAPIV3.ParameterObject[],
-  required: boolean,
-  replaceLeadingAtMark: string
-) => {
+export default (text: string, params: OpenAPIV3.ParameterObject[], required: boolean) => {
   if (text === '*') return '_any'
   if (!/^{/.test(text)) {
-    if (replaceLeadingAtMark !== '@' && text.startsWith('@'))
-      return text.replace('@', replaceLeadingAtMark)
     return text
   }
 
diff --git a/src/getConfig.ts b/src/getConfig.ts
index 30a6dd13..1e294c3c 100644
--- a/src/getConfig.ts
+++ b/src/getConfig.ts
@@ -5,14 +5,12 @@ export type Config = Pick<AspidaConfig, 'outputEachDir' | 'outputMode' | 'traili
   input: string | OpenAPI.Document
   output: string
   isYaml: boolean
-  replaceLeadingAtMark: string
 }
 
 export type ConfigFile = AspidaConfig & {
   openapi?: {
     inputFile: string
     yaml?: boolean
-    replaceLeadingAtMark?: string
     outputDir?: string
   }
 }
@@ -25,8 +23,7 @@ const createConfig = (config: ConfigFile): Config => {
     trailingSlash: config.trailingSlash,
     outputEachDir: config.outputEachDir,
     outputMode: config.outputMode,
-    isYaml: openapi.yaml ?? !openapi.inputFile.endsWith('.json'),
-    replaceLeadingAtMark: openapi.replaceLeadingAtMark ?? '@'
+    isYaml: openapi.yaml ?? !openapi.inputFile.endsWith('.json')
   }
 }