diff --git a/demos/classchart.html b/demos/classchart.html
index 3ad8fb100b..57646e7159 100644
--- a/demos/classchart.html
+++ b/demos/classchart.html
@@ -145,21 +145,6 @@ <h1>Class diagram demos</h1>
     </pre>
     <hr />
 
-    <pre class="mermaid">
-    classDiagram
-      class Person {
-        +Id : Guid
-        +FirstName : string
-        +LastName : string
-        -privateProperty : string
-        #ProtectedProperty : string
-        ~InternalProperty : string
-        ~AnotherInternalProperty : List~List~string~~
-      }
-      class People List~List~Person~~
-    </pre>
-    <hr />
-
     <pre class="mermaid">
     classDiagram
       A1 --> B1
diff --git a/demos/gantt.html b/demos/gantt.html
index 88f52ef5c9..92e4e728af 100644
--- a/demos/gantt.html
+++ b/demos/gantt.html
@@ -71,28 +71,6 @@ <h1>Gantt chart diagram demos</h1>
     </pre>
     <hr />
 
-    <pre class="mermaid">
-    gantt
-    title Hide today marker (vertical line should not be visible)
-    dateFormat Z
-    axisFormat %d/%m
-    todayMarker off
-    section Section1
-    Today: 1, 08-08-09-01:00, 5min
-    </pre>
-    <hr />
-
-    <pre class="mermaid">
-    gantt
-    title Style today marker (vertical line should be 5px wide and half-transparent blue)
-    dateFormat Z
-    axisFormat %d/%m
-    todayMarker stroke-width:5px,stroke:#00f,opacity:0.5
-    section Section1
-    Today: 1, 08-08-09-01:00, 5min
-    </pre>
-    <hr />
-
     <pre class="mermaid">
     gantt
     dateFormat YYYY-MM-DD