diff --git a/spellchecker/src/com/intellij/spellchecker/settings/SettingsTransferActivity.kt b/spellchecker/src/com/intellij/spellchecker/settings/SettingsTransferActivity.kt
index 9334894efb91..e79164c8d4f8 100644
--- a/spellchecker/src/com/intellij/spellchecker/settings/SettingsTransferActivity.kt
+++ b/spellchecker/src/com/intellij/spellchecker/settings/SettingsTransferActivity.kt
@@ -1,20 +1,30 @@
-// Copyright 2000-2022 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.spellchecker.settings
 
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.components.serviceAsync
+import com.intellij.openapi.extensions.ExtensionNotApplicableException
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.startup.ProjectActivity
 import com.intellij.spellchecker.ApplicationDictionaryLayer
 import com.intellij.spellchecker.ProjectDictionaryLayer
 import com.intellij.spellchecker.state.ProjectDictionaryState
 
-internal class SettingsTransferActivity : ProjectActivity {
+private class SettingsTransferActivity : ProjectActivity {
+  init {
+    if (ApplicationManager.getApplication().isUnitTestMode) {
+      throw ExtensionNotApplicableException.create()
+    }
+  }
+
   override suspend fun execute(project: Project) {
-    val settings = SpellCheckerSettings.getInstance(project)
+    val settings = project.serviceAsync<SpellCheckerSettings>()
     if (settings.isSettingsTransferred) {
       return
     }
+
     if (settings.isUseSingleDictionaryToSave && ProjectDictionaryLayer.name.get() == settings.dictionaryToSave &&
-        project.getService(ProjectDictionaryState::class.java).projectDictionary.words.isEmpty()) {
+        project.serviceAsync<ProjectDictionaryState>().projectDictionary.words.isEmpty()) {
       settings.dictionaryToSave = ApplicationDictionaryLayer.name
     }
     settings.isSettingsTransferred = true