diff --git a/designer-realize/src/main/java/com/fr/start/module/DesignerActivator.java b/designer-realize/src/main/java/com/fr/start/module/DesignerActivator.java
index e5ada5f8a9..7fe2fa818b 100644
--- a/designer-realize/src/main/java/com/fr/start/module/DesignerActivator.java
+++ b/designer-realize/src/main/java/com/fr/start/module/DesignerActivator.java
@@ -42,7 +42,6 @@ import com.fr.design.javascript.JavaScriptImplPane;
 import com.fr.design.javascript.ParameterJavaScriptPane;
 import com.fr.design.javascript.ProcessTransitionAdapter;
 import com.fr.design.mainframe.BaseJForm;
-import com.fr.design.mainframe.ElementCaseThumbnail;
 import com.fr.design.mainframe.FormHierarchyTreePane;
 import com.fr.design.mainframe.InformationCollector;
 import com.fr.design.mainframe.JTemplateEvent;
@@ -407,7 +406,6 @@ public class DesignerActivator extends Activator {
         DesignModuleFactory.registerParameterReader(new FormParameterReader());
 
         StableFactory.registerMarkedClass(BaseJForm.XML_TAG, NewJForm.class);
-        StableFactory.registerMarkedObject(ElementCaseThumbnailProcessor.MARK_STRING, new ElementCaseThumbnail());
 
         registerJTemplateEvent();
     }