diff --git a/packages/walkthrough/steps/19/README.md b/packages/walkthrough/steps/19/README.md
index dd60faf9..a2fc836c 100644
--- a/packages/walkthrough/steps/19/README.md
+++ b/packages/walkthrough/steps/19/README.md
@@ -148,6 +148,7 @@ In the `items` aggregation, we define the template for the list that will be aut
 ```xml
 <mvc:View
    xmlns="sap.m"
+   xmlns:core="sap.ui.core"
    xmlns:mvc="sap.ui.core.mvc">
    <List
       headerText="{i18n>invoiceListTitle}"
diff --git a/packages/walkthrough/steps/37/README.md b/packages/walkthrough/steps/37/README.md
index 6ad2f06b..fbd90f7b 100644
--- a/packages/walkthrough/steps/37/README.md
+++ b/packages/walkthrough/steps/37/README.md
@@ -94,6 +94,7 @@ We add an `sap.m.Panel` around the invoice list and move the toolbar from the ta
 <mvc:View
 	controllerName="ui5.walkthrough.controller.InvoiceList"
 	xmlns="sap.m"
+  xmlns:core="sap.ui.core"
 	xmlns:mvc="sap.ui.core.mvc">
 	<Panel accessibleRole="Region">
 		<headerToolbar>