diff --git a/src/doc/book/SUMMARY.md b/src/doc/book/SUMMARY.md
index fe5e1c3990c..18aa9f24580 100644
--- a/src/doc/book/SUMMARY.md
+++ b/src/doc/book/SUMMARY.md
@@ -9,6 +9,7 @@
     * [Comments](comments.md)
     * [if](if.md)
     * [Loops](loops.md)
+    * [Vectors](vectors.md)
     * [Ownership](ownership.md)
     * [References and Borrowing](references-and-borrowing.md)
     * [Lifetimes](lifetimes.md)
@@ -18,7 +19,6 @@
     * [Match](match.md)
     * [Patterns](patterns.md)
     * [Method Syntax](method-syntax.md)
-    * [Vectors](vectors.md)
     * [Strings](strings.md)
     * [Generics](generics.md)
     * [Traits](traits.md)