diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 306acb13f88..ece9d065413 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -146,6 +146,8 @@ Bug Fixes
 
 * SOLR-8645: managed-schema is now syntax highlighted in cloud->Tree view (Alexandre Rafalovitch via janhoy)
 
+* SOLR-8379: UI Cloud->Tree view now shows .txt files correctly (Alexandre Rafalovitch via janhoy)
+
 Optimizations
 ----------------------
 
diff --git a/solr/webapp/web/js/angular/app.js b/solr/webapp/web/js/angular/app.js
index 8a1fe26c593..e7491fe63d4 100644
--- a/solr/webapp/web/js/angular/app.js
+++ b/solr/webapp/web/js/angular/app.js
@@ -148,7 +148,7 @@ solrAdminApp.config([
 })
 .filter('highlight', function($sce) {
   return function(input, lang) {
-    if (lang && input && lang!="text") return hljs.highlight(lang, input).value;
+    if (lang && input && lang!="txt") return hljs.highlight(lang, input).value;
     return input;
   }
 })