diff --git a/praw/models/reddit/mixins/inboxtoggleable.py b/praw/models/reddit/mixins/inboxtoggleable.py
index c55235d76..1e9162a51 100644
--- a/praw/models/reddit/mixins/inboxtoggleable.py
+++ b/praw/models/reddit/mixins/inboxtoggleable.py
@@ -6,7 +6,7 @@ class InboxToggleableMixin:
     """Interface for classes that can optionally receive inbox replies."""
 
     def disable_inbox_replies(self):
-        """Disable inbox replies for the item.
+        """Disable inbox replies for the item. This can only apply to a thing created by the user.
 
         Example usage:
 
@@ -28,7 +28,7 @@ def disable_inbox_replies(self):
         )
 
     def enable_inbox_replies(self):
-        """Enable inbox replies for the item.
+        """Enable inbox replies for the item. This can only apply to a thing created by the user.
 
         Example usage: