diff --git a/src/control_backend/schemas/internal_message.py b/src/control_backend/schemas/internal_message.py
index d70f80a..758c085 100644
--- a/src/control_backend/schemas/internal_message.py
+++ b/src/control_backend/schemas/internal_message.py
@@ -7,7 +7,7 @@ class InternalMessage(BaseModel):
     """
     Standard message envelope for communication between agents within the Control Backend.
 
-    :ivar to: The name of the destination agent.
+    :ivar to: The name(s) of the destination agent(s).
     :ivar sender: The name of the sending agent.
     :ivar body: The string payload (often a JSON-serialized model).
     :ivar thread: An optional thread identifier/topic to categorize the message (e.g., 'beliefs').