diff --git a/src/lib/middlewares/konnectorsI18n.js b/src/lib/middlewares/konnectorsI18n.js
deleted file mode 100644
index 8d13677b71..0000000000
--- a/src/lib/middlewares/konnectorsI18n.js
+++ /dev/null
@@ -1,51 +0,0 @@
-import { extend as extendI18n } from 'cozy-ui/transpiled/react/providers/I18n'
-
-const KONNECTORS_DOCTYPE = 'io.cozy.konnectors'
-
-const extendI18nWithKonnector = lang => konnector => {
-  const { langs, locales } = konnector
-
-  const hasLangs = langs && langs.length
-  if (!hasLangs) {
-    // eslint-disable-next-line no-console
-    console.warn(`Konnector ${konnector.name} does not specify any lang`)
-    return konnector
-  }
-
-  const providesLang = hasLangs && langs.includes(lang)
-  const actualLang = providesLang ? lang : langs[0]
-
-  const localeKeys = locales && Object.keys(locales)
-  const providesLocales =
-    localeKeys && localeKeys.length && localeKeys.includes(actualLang)
-
-  if (!providesLocales) {
-    // eslint-disable-next-line no-console
-    console.warn(
-      `Konnector ${konnector.name} does not specify any locale for lang ${actualLang}`
-    )
-    return konnector
-  }
-
-  extendI18n({ [konnector.slug]: locales[actualLang] })
-  return konnector
-}
-
-export const konnectorsI18nMiddleware = lang => () => next => action => {
-  const { response } = action
-  switch (action.type) {
-    case 'RECEIVE_DATA':
-    case 'RECEIVE_NEW_DOCUMENT':
-      if (response && action.doctype === KONNECTORS_DOCTYPE) {
-        const konnectors = response.data
-        konnectors &&
-          konnectors.length &&
-          konnectors.forEach(extendI18nWithKonnector(lang))
-      }
-      break
-  }
-
-  return next(action)
-}
-
-export default konnectorsI18nMiddleware