diff --git a/src/components/views/messages/EncryptionEvent.js b/src/components/views/messages/EncryptionEvent.js
index b7c13c0a05..a475666e88 100644
--- a/src/components/views/messages/EncryptionEvent.js
+++ b/src/components/views/messages/EncryptionEvent.js
@@ -43,7 +43,7 @@ export default class EncryptionEvent extends React.Component {
         } else {
             body = <div>
                 <div className="mx_cryptoEvent_title">{_t("Encryption not enabled")}</div>
-                <div className="mx_cryptoEvent_subtitle">{_t("The encryption used by this room isn't supported")}</div>
+                <div className="mx_cryptoEvent_subtitle">{_t("The encryption used by this room isn't supported.")}</div>
             </div>;
             classes += " mx_cryptoEvent_icon_warning";
         }