diff --git a/ultrasonic/lint-baseline.xml b/ultrasonic/lint-baseline.xml
index 62a8f675..521d62a7 100644
--- a/ultrasonic/lint-baseline.xml
+++ b/ultrasonic/lint-baseline.xml
@@ -55,18 +55,18 @@
         errorLine2="         ~~~~~~~~">
         <location
             file="src/main/AndroidManifest.xml"
-            line="135"
+            line="151"
             column="10"/>
     </issue>
 
     <issue
         id="ExportedReceiver"
         message="Exported receiver does not require permission"
-        errorLine1="        &lt;receiver android:name=&quot;.receiver.UltrasonicIntentReceiver&quot;>"
+        errorLine1="        &lt;receiver android:name=&quot;.receiver.UltrasonicIntentReceiver&quot;"
         errorLine2="         ~~~~~~~~">
         <location
             file="src/main/AndroidManifest.xml"
-            line="74"
+            line="75"
             column="10"/>
     </issue>
 
@@ -77,7 +77,7 @@
         errorLine2="         ~~~~~~~">
         <location
             file="src/main/AndroidManifest.xml"
-            line="64"
+            line="65"
             column="10"/>
     </issue>
 
@@ -92,72 +92,6 @@
             column="10"/>
     </issue>
 
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver android:name=&quot;.receiver.UltrasonicIntentReceiver&quot;>"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="74"
-            column="10"/>
-    </issue>
-
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="86"
-            column="10"/>
-    </issue>
-
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="97"
-            column="10"/>
-    </issue>
-
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="108"
-            column="10"/>
-    </issue>
-
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="119"
-            column="10"/>
-    </issue>
-
-    <issue
-        id="IntentFilterExportedReceiver"
-        message="As of Android 12, `android:exported` must be set; use `true` to make the activity \&#xA;available to other apps, and `false` otherwise."
-        errorLine1="        &lt;receiver android:name=&quot;.receiver.MediaButtonIntentReceiver&quot;>"
-        errorLine2="         ~~~~~~~~">
-        <location
-            file="src/main/AndroidManifest.xml"
-            line="130"
-            column="10"/>
-    </issue>
-
     <issue
         id="ObsoleteLayoutParam"
         message="Invalid layout param in a `LinearLayout`: `layout_above`"
diff --git a/ultrasonic/src/main/AndroidManifest.xml b/ultrasonic/src/main/AndroidManifest.xml
index a421856c..0e955a94 100644
--- a/ultrasonic/src/main/AndroidManifest.xml
+++ b/ultrasonic/src/main/AndroidManifest.xml
@@ -61,6 +61,7 @@
             android:exported="false">
         </service>
 
+        <!-- TODO: Check if it works with exported=false as well -->
         <service android:name=".playback.PlaybackService"
             android:label="@string/common.appname"
             android:exported="true">
@@ -71,7 +72,8 @@
             </intent-filter>
         </service>
 
-        <receiver android:name=".receiver.UltrasonicIntentReceiver">
+        <receiver android:name=".receiver.UltrasonicIntentReceiver"
+            android:exported="true">
             <intent-filter>
                 <action android:name="org.moire.ultrasonic.CMD_TOGGLEPAUSE"/>
                 <action android:name="org.moire.ultrasonic.CMD_PLAY"/>
@@ -83,7 +85,8 @@
                 <action android:name="org.moire.ultrasonic.CMD_PROCESS_KEYCODE"/>
             </intent-filter>
         </receiver>
-        <receiver android:name=".receiver.BluetoothIntentReceiver">
+        <receiver android:name=".receiver.BluetoothIntentReceiver"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
                 <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED"/>
@@ -93,7 +96,8 @@
         </receiver>
         <receiver
             android:name=".provider.UltrasonicAppWidgetProvider4X1"
-            android:label="Ultrasonic (4x1)">
+            android:label="Ultrasonic (4x1)"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
             </intent-filter>
@@ -104,7 +108,8 @@
         </receiver>
         <receiver
             android:name=".provider.UltrasonicAppWidgetProvider4X2"
-            android:label="Ultrasonic (4x2)">
+            android:label="Ultrasonic (4x2)"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
             </intent-filter>
@@ -115,7 +120,8 @@
         </receiver>
         <receiver
             android:name=".provider.UltrasonicAppWidgetProvider4X3"
-            android:label="Ultrasonic (4x3)">
+            android:label="Ultrasonic (4x3)"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
             </intent-filter>
@@ -126,7 +132,8 @@
         </receiver>
         <receiver
             android:name=".provider.UltrasonicAppWidgetProvider4X4"
-            android:label="Ultrasonic (4x4)">
+            android:label="Ultrasonic (4x4)"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
             </intent-filter>
@@ -135,7 +142,8 @@
                 android:name="android.appwidget.provider"
                 android:resource="@xml/appwidget_info_4x4"/>
         </receiver>
-        <receiver android:name=".receiver.MediaButtonIntentReceiver">
+        <receiver android:name=".receiver.MediaButtonIntentReceiver"
+            android:exported="true">
             <intent-filter android:priority="2147483647">
                 <action android:name="android.intent.action.MEDIA_BUTTON"/>
             </intent-filter>