diff --git a/book/en/src/by-example/resources.md b/book/en/src/by-example/resources.md
index c34efc9ac0..14a02dee6a 100644
--- a/book/en/src/by-example/resources.md
+++ b/book/en/src/by-example/resources.md
@@ -146,5 +146,5 @@ There exists two other options dealing with resources
   same priority never can preempt another task on the same priority
   this is safe.
 * `#[task_local]`: there must be only one task using this resource,
-  similar to a task local resource, but (optionally) set-up by init.
+  similar to a `static mut` task local resource, but (optionally) set-up by init.