diff --git a/posts.py b/posts.py
index 05da2c3b5..a129f1ae4 100644
--- a/posts.py
+++ b/posts.py
@@ -2667,7 +2667,8 @@ def mutePost(baseDir: str,nickname: str,domain: str,postId: str, \
     if postId in recentPostsCache['index']:
         print('MUTE: '+postId+' is in recent posts cache')
         if recentPostsCache['json'].get(postId):
-            recentPostsCache['json'][postId]['muted']=True
+            postJsonObject['muted']=True
+            recentPostsCache['json'][postId]=json.dumps(postJsonObject)
             print('MUTE: '+postId+' marked as muted in recent posts cache')
 
 def unmutePost(baseDir: str,nickname: str,domain: str,postId: str, \
@@ -2697,5 +2698,6 @@ def unmutePost(baseDir: str,nickname: str,domain: str,postId: str, \
     if postId in recentPostsCache['index']:
         print('UNMUTE: '+postId+' is in recent posts cache')
         if recentPostsCache['json'].get(postId):
-            recentPostsCache['json'][postId]['muted']=False
+            postJsonObject['muted']=False
+            recentPostsCache['json'][postId]=json.dumps(postJsonObject)
             print('UNMUTE: '+postId+' marked as not muted in recent posts cache')