diff --git a/views/blog/index.tpl b/views/blog/index.tpl
index 19123c85..3cdc5c81 100644
--- a/views/blog/index.tpl
+++ b/views/blog/index.tpl
@@ -15,7 +15,6 @@
     <link href="{{cdncss "/static/bootstrap/css/bootstrap.min.css"}}" rel="stylesheet">
 
     <link href="{{cdncss "/static/font-awesome/css/font-awesome.min.css"}}" rel="stylesheet">
-    <link href="{{cdncss "/static/editor.md/lib/mermaid/mermaid.css"}}" rel="stylesheet">
     <link href="{{cdncss "/static/editor.md/lib/sequence/sequence-diagram-min.css"}}" rel="stylesheet">
     <link href="{{cdncss "/static/css/kancloud.css" "version"}}" rel="stylesheet">
     <link href="{{cdncss "/static/editor.md/css/editormd.preview.css"}}" rel="stylesheet">
diff --git a/views/document/default_read.tpl b/views/document/default_read.tpl
index 86c9a5fc..58f06393 100644
--- a/views/document/default_read.tpl
+++ b/views/document/default_read.tpl
@@ -21,7 +21,6 @@
     <link href="{{cdncss "/static/nprogress/nprogress.css"}}" rel="stylesheet">
     <link href="{{cdncss "/static/css/kancloud.css" "version"}}" rel="stylesheet">
     <link href="{{cdncss "/static/css/jstree.css"}}" rel="stylesheet">
-    <link href="{{cdncss "/static/editor.md/lib/mermaid/mermaid.css" "version"}}" rel="stylesheet">
     <link href="{{cdncss "/static/editor.md/lib/sequence/sequence-diagram-min.css" "version"}}" rel="stylesheet">
     <link href="{{cdncss "/static/editor.md/css/editormd.preview.css" "version"}}" rel="stylesheet">
     <link href="{{cdncss "/static/css/markdown.preview.css" "version"}}" rel="stylesheet">