diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
index 7096b76a05..46f19776fa 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/window/WTextEditorDialog.java
@@ -284,7 +284,8 @@ public class WTextEditorDialog extends Window implements EventListener<Event>{
 	}
 	
 	private void onSize() {
-		editor.invalidate();
+		if(editor != null)
+			editor.invalidate();
 	}
 	
 	private void updateStatus(int newLength) {