diff --git a/src/snek/static/chat-input.js b/src/snek/static/chat-input.js
index 0d09d30..9b45b35 100644
--- a/src/snek/static/chat-input.js
+++ b/src/snek/static/chat-input.js
@@ -258,6 +258,7 @@ levenshteinDistance(a, b) {
       this.messageUid = "?";
     }
 
+    this.value = this.replaceMentionsWithAuthors(this.value);
     this.sendMessage(this.channelUid, this.value).then((uid) => {
         if (this.liveType) {
             this.messageUid = uid;