diff --git a/book/src/tutorial/db.md b/book/src/tutorial/db.md
index c48e61d..fe55d7c 100644
--- a/book/src/tutorial/db.md
+++ b/book/src/tutorial/db.md
@@ -33,7 +33,7 @@ In addition to the struct itself, we must add an impl of `salsa::Database`:
 If you want to permit accessing your database from multiple threads at once, then you also need to implement the `ParallelDatabase` trait:
 
 ```rust
-{{#include ../../../calc-example/calc/src/db.rs:db_impl}}
+{{#include ../../../calc-example/calc/src/db.rs:par_db_impl}}
 ```
 
 ## Implementing the `Default` trait
diff --git a/components/salsa-2022/src/database.rs b/components/salsa-2022/src/database.rs
index dbd4c44..fd6b1b7 100644
--- a/components/salsa-2022/src/database.rs
+++ b/components/salsa-2022/src/database.rs
@@ -67,7 +67,7 @@ pub trait ParallelDatabase: Database + Send {
     ///     fn snapshot(&self) -> Snapshot<Self> {
     ///         Snapshot::new(
     ///             MyDatabaseType {
-    ///                 runtime: self.runtime.snapshot(self),
+    ///                 runtime: self.storage.snapshot(),
     ///                 other_field: self.other_field.clone(),
     ///             }
     ///         )