diff --git a/korman/nodes/node_messages.py b/korman/nodes/node_messages.py
index 1c2fa4d..c36f39a 100644
--- a/korman/nodes/node_messages.py
+++ b/korman/nodes/node_messages.py
@@ -893,6 +893,7 @@ class PlasmaSoundMsgNode(idprops.IDPropObjectMixin, PlasmaMessageWithCallbacksNo
     def has_callbacks(self):
         if not self.is_random_sound:
             return self.event != "NONE"
+        return False
 
     @classmethod
     def _idprop_mapping(cls):
diff --git a/korman/nodes/node_responder.py b/korman/nodes/node_responder.py
index 10ccf69..9acaf3a 100644
--- a/korman/nodes/node_responder.py
+++ b/korman/nodes/node_responder.py
@@ -356,7 +356,7 @@ class PlasmaResponderStateNode(PlasmaNodeBase, bpy.types.Node):
         """
         if node is None:
             node = self
-        return sorted(node.find_outputs("msgs"), key=lambda x: x.has_callbacks and x.has_linked_callbacks)
+        return sorted(node.find_outputs("msgs"), key=lambda x: bool(x.has_callbacks and x.has_linked_callbacks))
 
 
 class PlasmaRespStateSocket(PlasmaNodeSocketBase, bpy.types.NodeSocket):