diff --git a/xep-0420.xml b/xep-0420.xml
index e7fa388f..d4dec42b 100644
--- a/xep-0420.xml
+++ b/xep-0420.xml
@@ -30,6 +30,12 @@
   <supersededby/>
   <shortname>SCE</shortname>
   &paulschaub;
+  <revision>
+    <version>0.3.1</version>
+    <date>2020-11-03</date>
+    <initials>gh/@melvo</initials>
+    <remark><p>Fix misspelling of 'whose'</p></remark>
+  </revision>
   <revision>
     <version>0.3.0</version>
     <date>2020-07-03</date>
@@ -112,19 +118,19 @@
     <tr>
       <td>&time;</td>
       <td>Timestamp</td>
-      <td>Prevent replay attacks using old messages. This element MUST have one attribute 'stamp', whos value is a timestamp following the format described in &xep0082;. The timestamp represents the time at which the message was encrypted by the sender.</td>
+      <td>Prevent replay attacks using old messages. This element MUST have one attribute 'stamp', whose value is a timestamp following the format described in &xep0082;. The timestamp represents the time at which the message was encrypted by the sender.</td>
       <td>Receiving clients MUST check whether the difference between the timestamp and the sending time derived from the stanza itself lays within a reasonable margin. The client SHOULD use the content of the timestamp element when displaying the send date of the message</td>
     </tr>
     <tr>
       <td>&to;</td>
       <td>Recipient of the message</td>
-      <td>Prevent spoofing of the recipient. This element MUST have one attribute 'jid', whos value is the JID of the intended recipient.</td>
+      <td>Prevent spoofing of the recipient. This element MUST have one attribute 'jid', whose value is the JID of the intended recipient.</td>
       <td>Receiving clients MUST check, if the JID matches the to attribute of the enclosing stanza and otherwise alert the user/reject the message</td>
     </tr>
     <tr>
       <td>&from;</td>
       <td>Sender of the message</td>
-      <td>Prevent spoofing of the sender. This element MUST have one attribute 'jid', whos value is the JID of the sender of the message.</td>
+      <td>Prevent spoofing of the sender. This element MUST have one attribute 'jid', whose value is the JID of the sender of the message.</td>
       <td>Receiving clients MUST check, if the value matches the from attribute of the enclosing stanza and otherwise alert the user/reject the message</td>
     </tr>
   </table>