diff --git a/js/topic-handler.js b/js/topic-handler.js
index ae014df..0b59883 100644
--- a/js/topic-handler.js
+++ b/js/topic-handler.js
@@ -3,4 +3,5 @@ document.getElementById('boardID').onchange = function(e){
     messageHashes = []
     blocks = []
     document.getElementsByClassName("messageFeed")[0].innerText = ""
+    document.getElementById('memUsage').innerText = "0kB"
 }
\ No newline at end of file