diff --git a/booksrc/tutorial11.md b/booksrc/tutorial11.md
index db06292..c679792 100644
--- a/booksrc/tutorial11.md
+++ b/booksrc/tutorial11.md
@@ -19,7 +19,7 @@ src/main.rs:40: func1 error calling func2
 
 which gives us a lot more detail.
 
-To create your own Errors, you might find [crates](https://crates.io) which crate enum `Display+Debug` via derive macros.
+To create your own Errors, you might find [crates](https://crates.io) which create enum `Display+Debug` via derive macros.
 
 Also noteworthy is [custom_error](https://crates.io/crates/custom_error) to define your custom errors,
 which can then be used with `chainerror`.
@@ -31,4 +31,4 @@ use crate::chainerror::*;
 # mod chainerror {
 {{#includecomment ../src/lib.rs}}
 # }
-~~~
\ No newline at end of file
+~~~