1 files changed, 3 insertions, 0 deletions
diff --git a/lib/serve.js b/lib/serve.js
index 7180f7a..ca6b2ae 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -971,6 +971,7 @@ Serve.prototype.composer = function (opts, cb) {
     var myId = self.app.sbot.id
     var content
     var unknownMentions = []
+    var unknownMentionNames = {}
     try {
       content = JSON.parse(data.text)
     } catch (err) {
@@ -991,6 +992,8 @@ Serve.prototype.composer = function (opts, cb) {
           } else if (mention.link === '@') {
             // bare feed name
             var name = mention.name
+            if (unknownMentionNames[name]) return false
+            unknownMentionNames[name] = true
             var fullName = mention.link + name
             var id = formNames[name] || self.app.getReverseNameSync(fullName)
             unknownMentions.push({name: name, fullName: fullName, id: id})