diff --git a/api/js/etemplate/et2_core_DOMWidget.ts b/api/js/etemplate/et2_core_DOMWidget.ts
index 00264c4411..e498cfdbfd 100644
--- a/api/js/etemplate/et2_core_DOMWidget.ts
+++ b/api/js/etemplate/et2_core_DOMWidget.ts
@@ -349,7 +349,7 @@ export abstract class et2_DOMWidget extends et2_widget implements et2_IDOMNode
 		{
 			// Find the tab by DOM heritage
 			// @ts-ignore
-			if(tabbox.tabData[i].contentDiv.contains(this.div[0] || this))
+			if(tabbox.tabData[i].contentDiv?.contains(this.div[0] || this))
 			{
 				return tabbox.tabData[i];
 			}
@@ -979,4 +979,4 @@ export class et2_action_object_impl
 	{
 		return this.aoi;
 	}
-}
+}
\ No newline at end of file