diff --git a/webapp_post.py b/webapp_post.py
index 4ba2bb1e5..cd0c4afd5 100644
--- a/webapp_post.py
+++ b/webapp_post.py
@@ -1226,6 +1226,7 @@ def individualPostAsHtml(signingPrivateKeyPem: str,
     messageId = ''
     if postJsonObject.get('id'):
         messageId = removeIdEnding(postJsonObject['id'])
+    muteMessageId = messageId
 
     _logPostTiming(enableTimingLog, postStartTime, '2')
 
@@ -1365,6 +1366,8 @@ def individualPostAsHtml(signingPrivateKeyPem: str,
                          recentPostsCache)
             return ''
         postJsonObject = postJsonAnnounce
+        if postJsonObject.get('id'):
+            muteMessageId = removeIdEnding(postJsonObject['id'])
 
         # is the announced post in the html cache?
         postHtml = \
@@ -1552,7 +1555,7 @@ def individualPostAsHtml(signingPrivateKeyPem: str,
     muteStr = \
         _getMuteIconHtml(isMuted,
                          postActor,
-                         messageId,
+                         muteMessageId,
                          nickname, domainFull,
                          allowDeletion,
                          pageNumberParam,