diff --git a/addons/website_blog/data/website_blog_data.xml b/addons/website_blog/data/website_blog_data.xml
index d42ceb80514..ab8a8b87dd4 100644
--- a/addons/website_blog/data/website_blog_data.xml
+++ b/addons/website_blog/data/website_blog_data.xml
@@ -9,7 +9,7 @@
 
         <record id="menu_blog" model="website.menu">
             <field name="name">News</field>
-            <field name="url" eval="'/blog/cat/'+int(ref('website_blog.blog_category_1'))"/>
+            <field name="url" eval="'/blog/cat/'+str(ref('website_blog.blog_category_1'))"/>
             <field name="parent_id" ref="website.main_menu"/>
             <field name="sequence" type="int">50</field>
         </record>
@@ -21,7 +21,7 @@
         <record id="action_open_website" model="ir.actions.act_url">
             <field name="name">Website Blogs</field>
             <field name="target">self</field>
-            <field name="url" eval="'/blog/cat/'+int(ref('website_blog.blog_category_1'))"/>
+            <field name="url" eval="'/blog/cat/'+str(ref('website_blog.blog_category_1'))"/>
         </record>
         <record id="base.open_menu" model="ir.actions.todo">
             <field name="action_id" ref="action_open_website"/>