diff --git a/includes/admin/class-wc-admin-post-types.php b/includes/admin/class-wc-admin-post-types.php
index 9305ea76fbd..f904d8324da 100644
--- a/includes/admin/class-wc-admin-post-types.php
+++ b/includes/admin/class-wc-admin-post-types.php
@@ -1243,7 +1243,7 @@ class WC_Admin_Post_Types {
 		$stock_status = ! empty( $_REQUEST['_stock_status'] ) ? wc_clean( $_REQUEST['_stock_status'] ) : $stock_status;
 
 		if ( ! empty( $_REQUEST['_manage_stock'] ) ) {
-			$manage_stock = 'yes' === wc_clean( $_REQUEST['_manage_stock'] ) && 'grouped' !== $product->product_type ? 'yes' : 'no';
+			$manage_stock = 'yes' === wc_clean( $_REQUEST['_manage_stock'] ) && 'grouped' !== $product->get_type() ? 'yes' : 'no';
 		} else {
 			$manage_stock = $was_managing_stock;
 		}