diff --git a/js/views/conversation_view.js b/js/views/conversation_view.js
index 085c85f1..39768a2f 100644
--- a/js/views/conversation_view.js
+++ b/js/views/conversation_view.js
@@ -62,6 +62,7 @@
                 this.appWindow.contentWindow.removeEventListener('focus', onFocus);
                 window.autosize.destroy(this.$messageField);
                 this.remove();
+                this.model.messageCollection.reset([]);
             }.bind(this));
 
             this.fetchMessages();