diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
index 1bee6b2b..4e4e003e 100644
--- a/book/src/SUMMARY.md
+++ b/book/src/SUMMARY.md
@@ -2,12 +2,12 @@
 
 [halo2](README.md)
 - [Concepts](concepts.md)
-  - [Multipoint opening argument](concepts/multipoint-opening.md)
 - [User Documentation](user.md)
   - [A simple example](user/simple-example.md)
   - [Lookup tables](user/lookup-tables.md)
   - [Gadgets](user/gadgets.md)
   - [Tips and tricks](user/tips-and-tricks.md)
 - [Design](design.md)
+  - [Multipoint opening argument](design/multipoint-opening.md)
   - [Permutation argument](design/permutation.md)
   - [Lookup argument](design/lookup-argument.md)
diff --git a/book/src/concepts/multipoint-opening.md b/book/src/design/multipoint-opening.md
similarity index 100%
rename from book/src/concepts/multipoint-opening.md
rename to book/src/design/multipoint-opening.md