diff --git a/config/_default/params.toml b/config/_default/params.toml
index e8024ff..5472628 100644
--- a/config/_default/params.toml
+++ b/config/_default/params.toml
@@ -200,6 +200,10 @@ plugins_js  = []
   publication_view = 2
   talk_view = 2
 
+# Breadcrumb navigation
+[breadcrumb]
+  page_types = {book = true}
+
 ############################
 ## Comments
 ############################
diff --git a/exampleSite/config/_default/params.toml b/exampleSite/config/_default/params.toml
index e5c0719..82375c1 100644
--- a/exampleSite/config/_default/params.toml
+++ b/exampleSite/config/_default/params.toml
@@ -200,6 +200,10 @@ plugins_js  = []
   publication_view = 2
   talk_view = 2
 
+# Breadcrumb navigation
+[breadcrumb]
+  page_types = {book = true}
+
 ############################
 ## Comments
 ############################