diff --git a/xep-0367.xml b/xep-0367.xml
index 355c0264..e4086f7e 100644
--- a/xep-0367.xml
+++ b/xep-0367.xml
@@ -168,9 +168,9 @@
 <section1 topic='Security Considerations' anchor='security'>
   <p>
     Clients that implement message attachments MUST display the attachments
-    in such a way that they could be confused with the original message and
-    cause someone viewing the conversation to assume they were sent by the
-    sender of the message being attached to.
+    in such a way that they could not be confused with the original message
+    and cause someone viewing the conversation to assume they were sent by
+    the sender of the message being attached to.
   </p>
   <p>
     When matching a received attachment to the original message, clients must