diff --git a/designer-form/src/main/java/com/fr/design/gui/controlpane/EventPropertyPane.java b/designer-form/src/main/java/com/fr/design/gui/controlpane/EventPropertyPane.java
index 1cebe463f3..25cefe3af3 100644
--- a/designer-form/src/main/java/com/fr/design/gui/controlpane/EventPropertyPane.java
+++ b/designer-form/src/main/java/com/fr/design/gui/controlpane/EventPropertyPane.java
@@ -166,7 +166,9 @@ public class EventPropertyPane extends UIControlPane implements ListControlPaneP
             }
             eventListWrapperPane.setVisible(listSize > 0);
         }
-        this.selectNameEdList.setSelectedIndex(0);
+        if (this.selectNameEdList != null) {
+            this.selectNameEdList.setSelectedIndex(0);
+        }
         this.repaint();
     }