diff --git a/actions/conversation.php b/actions/conversation.php
index 0eb0d86d65..c8755ba6ef 100644
--- a/actions/conversation.php
+++ b/actions/conversation.php
@@ -116,6 +116,11 @@ class ConversationAction extends Action
 
         $cnt = $ct->show();
     }
+
+    function isReadOnly()
+    {
+        return true;
+    }
 }
 
 /**