diff --git a/doc/conf.py b/doc/conf.py
index 7d2f1aec9..18796ca96 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -156,6 +156,9 @@ def get_incollection_template(self, e):
             self.format_web_refs(e),
         ]
 
+    def get_inbook_template(self, e):
+        return self.get_incollection_template(e)
+
     def get_inproceedings_template(self, e):
         return toplevel[
             sentence[