Android search dialog doesn't appear

Have a problem?
The search dialog doesn't show up?

I just thought you should know, I found this interesting comment on stackoverflow:

oh my god. this is f*ing stupid. i had to use android:label="@string/xyz" instead of android:label="lol" and no single word about this in the documentation. unbelievable

 This is my manifest:

<activity android:name=".SearchableActivity" >
 <intent-filter >
  <action android:name="android.intent.action.SEARCH" />
 </intent-filter>

 <meta-data
  android:name="android.app.searchable"
  android:resource="@xml/searchable" />
</activity>
<activity
 android:label="Preferred stations"
 android:name="PreferredStation"
 android:theme="@android:style/Theme.NoTitleBar" >
 <meta-data
  android:name="android.app.default_searchable"
  android:value=".SearchableActivity" />
</activity>

And searchable

<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
    android:label="@string/search_label"
    android:hint="@string/search_hint" >
</searchable>