diff --git a/static/editor.md/editormd.js b/static/editor.md/editormd.js
index f5353e9..cd84d90 100644
--- a/static/editor.md/editormd.js
+++ b/static/editor.md/editormd.js
@@ -4433,7 +4433,7 @@
 //                    })
                 })
             })
-            div.find("pre").addClass("line-numbers");
+            div.find("pre").addClass("line-numbers language-bash");
         }
         
         if (!editormd.isIE8)