diff --git a/src/search/SearchEngine.ts b/src/search/SearchEngine.ts
index de5810f..a2c023a 100644
--- a/src/search/SearchEngine.ts
+++ b/src/search/SearchEngine.ts
@@ -1,6 +1,4 @@
 import FlexSearch from 'flexsearch'
-// @ts-ignore
-import { encode as encode_balance } from 'flexsearch/dist/module/lang/latin/balance'
 
 import CozyClient, { Q } from 'cozy-client'
 import Minilog from 'cozy-minilog'
@@ -16,6 +14,7 @@ import {
   REPLICATION_DEBOUNCE
 } from '@/search/consts'
 import { getPouchLink } from '@/search/helpers/client'
+import { getSearchEncoder } from '@/search/helpers/getSearchEncoder'
 import { normalizeSearchResult } from '@/search/helpers/normalizeSearchResult'
 import { startReplicationWithDebounce } from '@/search/helpers/replication'
 import {
@@ -124,7 +123,7 @@ class SearchEngine {
 
     const flexsearchIndex = new FlexSearch.Document<CozyDoc, true>({
       tokenize: 'forward',
-      encode: encode_balance as FlexSearch.Encoders,
+      encode: getSearchEncoder(),
       minlength: 2,
       document: {
         id: '_id',
diff --git a/src/search/helpers/getSearchEncoder.ts b/src/search/helpers/getSearchEncoder.ts
new file mode 100644
index 0000000..cfdc22a
--- /dev/null
+++ b/src/search/helpers/getSearchEncoder.ts
@@ -0,0 +1,7 @@
+import FlexSearch from 'flexsearch'
+// @ts-ignore
+import { encode as encode_balance } from 'flexsearch/dist/module/lang/latin/balance'
+
+export const getSearchEncoder = (): FlexSearch.Encoders => {
+  return encode_balance as FlexSearch.Encoders
+}
diff --git a/src/search/helpers/replication.spec.ts b/src/search/helpers/replication.spec.ts
new file mode 100644
index 0000000..8850bf1
--- /dev/null
+++ b/src/search/helpers/replication.spec.ts
@@ -0,0 +1,56 @@
+import CozyClient from 'cozy-client'
+
+import { getPouchLink } from '@/search/helpers/client'
+
+import { startReplicationWithDebounce } from './replication'
+
+jest.mock('cozy-client')
+jest.mock('@/search/helpers/client', () => ({
+  getPouchLink: jest.fn()
+}))
+
+describe('startReplicationWithDebounce', () => {
+  let client: CozyClient
+  let pouchLink: any
+
+  beforeEach(() => {
+    client = new CozyClient()
+    pouchLink = {
+      startReplication: jest.fn()
+    }
+    log = {
+      debug: jest.fn()
+    }
+    ;(getPouchLink as jest.Mock).mockReturnValue(pouchLink)
+    jest.useFakeTimers()
+  })
+
+  afterEach(() => {
+    jest.clearAllMocks()
+    jest.clearAllTimers()
+  })
+
+  it('should start replication after the specified interval', () => {
+    const interval = 1000
+    const replicate = startReplicationWithDebounce(client, interval)
+
+    replicate()
+    expect(pouchLink.startReplication).not.toHaveBeenCalled()
+    jest.advanceTimersByTime(interval)
+    expect(pouchLink.startReplication).toHaveBeenCalledTimes(1)
+  })
+
+  it('should debounce replication calls within the interval', () => {
+    const interval = 1000
+    const replicate = startReplicationWithDebounce(client, interval)
+
+    replicate()
+    jest.advanceTimersByTime(interval / 2)
+    expect(pouchLink.startReplication).not.toHaveBeenCalled()
+    replicate()
+    replicate()
+
+    jest.advanceTimersByTime(interval)
+    expect(pouchLink.startReplication).toHaveBeenCalledTimes(1)
+  })
+})