diff --git a/packages/core/src/components/Tabs/Tabs.jsx b/packages/core/src/components/Tabs/Tabs.jsx
index afccb29e71..f5d8065234 100644
--- a/packages/core/src/components/Tabs/Tabs.jsx
+++ b/packages/core/src/components/Tabs/Tabs.jsx
@@ -46,11 +46,8 @@ function panelTabId(panel) {
  * @return {Boolean} Is this a TabPanel component?
  */
 function isTabPanel(child) {
-  // Preact doesn't support child.type, React doesn't support child.attributes
-  return (
-    child &&
-    (child.type === TabPanel || (child.attributes && child.attributes.tab))
-  );
+  // Preact doesn't support child.type
+  return child && (child.type === TabPanel || (child.props && child.props.tab));
 }
 
 /**