diff --git a/js/models/messages.js b/js/models/messages.js
index f97d6f47..3056b103 100644
--- a/js/models/messages.js
+++ b/js/models/messages.js
@@ -59,7 +59,7 @@
                 return i18n('sessionEnded');
             }
             if (this.isIncoming() && this.hasKeyConflicts()) {
-                return 'Received message with unknown identity key.';
+                return i18n('incomingKeyConflict');
             }
             if (this.isIncoming() && this.hasErrors()) {
                 return 'Error handling incoming message.';
diff --git a/test/models/messages_test.js b/test/models/messages_test.js
index 4bf1cbb3..a2f4bc49 100644
--- a/test/models/messages_test.js
+++ b/test/models/messages_test.js
@@ -177,7 +177,7 @@
             assert.equal(message.getDescription(), i18n('sessionEnded'));
 
             message = messages.add({type: 'incoming', errors: [{name: 'OutgoingIdentityKeyError'}]});
-            assert.equal(message.getDescription(), 'Received message with unknown identity key.');
+            assert.equal(message.getDescription(), i18n('incomingKeyConflict'));
 
         });