diff --git a/src/rpcclient/rpcclient/darwin/common.py b/src/rpcclient/rpcclient/darwin/common.py
index 8e6d22a..747f6ad 100644
--- a/src/rpcclient/rpcclient/darwin/common.py
+++ b/src/rpcclient/rpcclient/darwin/common.py
@@ -2,4 +2,4 @@
 from typing import Any, Union
 
 CfSerializable = Union[
-    tuple[str, Any], list, tuple[Any, ...], str, bool, float, bytes, datetime, None]
+    dict[str, Any], list, tuple[Any, ...], str, bool, float, bytes, datetime, None]
diff --git a/src/rpcclient/rpcclient/darwin/media.py b/src/rpcclient/rpcclient/darwin/media.py
index adda9e2..9b72e03 100644
--- a/src/rpcclient/rpcclient/darwin/media.py
+++ b/src/rpcclient/rpcclient/darwin/media.py
@@ -138,7 +138,7 @@ def set_mode(self, mode: AVAudioSessionMode):
     def set_category(self, category: AVAudioSessionCategory,
                      mode: AVAudioSessionMode = AVAudioSessionMode.Default,
                      route_sharing_policy: AVAudioSessionRouteSharingPolicy = AVAudioSessionRouteSharingPolicy.Default,
-                     options: AVAudioSessionCategoryOptions = 0):
+                     options: AVAudioSessionCategoryOptions = AVAudioSessionCategoryOptions.DefaultToSpeaker) -> None:
         category = self._client.symbols[category.value][0]
         mode = self._client.symbols[mode.value][0]
         self._session.objc_call('setCategory:mode:routeSharingPolicy:options:error:', category, mode,
diff --git a/src/rpcclient/rpcclient/darwin/symbol.py b/src/rpcclient/rpcclient/darwin/symbol.py
index 107f853..f344f3e 100644
--- a/src/rpcclient/rpcclient/darwin/symbol.py
+++ b/src/rpcclient/rpcclient/darwin/symbol.py
@@ -49,4 +49,10 @@ def objc_symbol(self):
 
     @property
     def osstatus(self) -> Optional[list[ErrorCode]]:
+        """ Get possible translation to given error code by querying osstatus """
         return get_possible_error_codes(self)
+
+    @property
+    def stripped_value(self) -> 'DarwinSymbol':
+        """ Remove PAC upper bits """
+        return self._client.symbol(self & 0xfffffffff)
diff --git a/src/rpcclient/tests/test_client.py b/src/rpcclient/tests/test_client.py
index deeb2aa..88f4408 100644
--- a/src/rpcclient/tests/test_client.py
+++ b/src/rpcclient/tests/test_client.py
@@ -81,7 +81,7 @@ def test_get_dummy_block(client):
     """
     :param rpcclient.client.Client client:
     """
-    assert client.get_dummy_block()[0] == client.symbols._NSConcreteGlobalBlock
+    client.cf([1, 2, 3]).objc_call('enumerateObjectsUsingBlock:', client.get_dummy_block())
 
 
 def test_listdir(client):