diff --git a/src/client/theme-default/styles/code.css b/src/client/theme-default/styles/code.css
index e27762cec210..f6b1317e4c78 100644
--- a/src/client/theme-default/styles/code.css
+++ b/src/client/theme-default/styles/code.css
@@ -156,7 +156,7 @@ div[class*='language-'].line-numbers-mode {
 }
 
 [class~='language-js']:before,
-[class~='language-typescript']:before {
+[class~='language-javascript']:before {
   content: 'js';
 }