diff --git a/src/resources/marked.js b/src/resources/marked.js
index 32747bf6..da7a8815 100644
--- a/src/resources/marked.js
+++ b/src/resources/marked.js
@@ -61,10 +61,10 @@ var updateText = function(text) {
     handleToc(needToc);
     insertImageCaption();
     setupImageView();
-    renderMermaid('lang-mermaid');
-    renderFlowchart(['lang-flowchart', 'lang-flow']);
-    renderPlantUML('lang-puml');
-    renderGraphviz('lang-dot');
+    renderMermaid('language-mermaid');
+    renderFlowchart(['language-flowchart', 'language-flow']);
+    renderPlantUML('language-puml');
+    renderGraphviz('language-dot');
     addClassToCodeBlock();
     renderCodeBlockLineNumber();