diff --git a/designer/src/com/fr/design/actions/cell/NewPresentAction.java b/designer/src/com/fr/design/actions/cell/NewPresentAction.java
index a35333d61..5f3d4b563 100644
--- a/designer/src/com/fr/design/actions/cell/NewPresentAction.java
+++ b/designer/src/com/fr/design/actions/cell/NewPresentAction.java
@@ -73,7 +73,7 @@ public class NewPresentAction extends PresentCheckBoxAction {
             try {
                 Class clazz = GeneralUtils.classForName(itemName);
                 if (itemName.equals(currentPresent.getClass().getName())) {
-                    return StableUtils.classInstanceOf(currentPresent.getClass(), clazz);
+                    return StableUtils.objectInstanceOf(currentPresent, clazz);
                 }
             } catch (Exception e) {
                 return "NOPRESENT".equals(itemName) && currentPresent == null;
diff --git a/designer_form/src/com/fr/design/designer/creator/XCreator.java b/designer_form/src/com/fr/design/designer/creator/XCreator.java
index ed692cd42..411f3c9ea 100644
--- a/designer_form/src/com/fr/design/designer/creator/XCreator.java
+++ b/designer_form/src/com/fr/design/designer/creator/XCreator.java
@@ -426,7 +426,7 @@ public abstract class XCreator extends JPanel implements XComponent, XCreatorToo
      */
     public boolean acceptType(Class<?>... acceptTypes) {
         for (Class<?> type : acceptTypes) {
-            if (StableUtils.classInstanceOf(this.getClass(), type)) {
+            if (StableUtils.objectInstanceOf(this, type)) {
                 return true;
             }
         }