diff --git a/exercises/20_threads/README.md b/exercises/20_threads/README.md
index dbe66643..0b32fb1d 100644
--- a/exercises/20_threads/README.md
+++ b/exercises/20_threads/README.md
@@ -7,3 +7,4 @@ Within your program, you can also have independent parts that run simultaneously
 
 - [Dining Philosophers example](https://doc.rust-lang.org/1.4.0/book/dining-philosophers.html)
 - [Using Threads to Run Code Simultaneously](https://doc.rust-lang.org/book/ch16-01-threads.html)
+- [Using Message Passing to Transfer Data Between Threads](https://doc.rust-lang.org/book/ch16-02-message-passing.html)
diff --git a/info.toml b/info.toml
index 6549e1c4..d5369d50 100644
--- a/info.toml
+++ b/info.toml
@@ -175,10 +175,7 @@ mode = "run"
 hint = """
 The error message points to the function `sale_price` and says it expects a type
 after the `->`. This is where the function's return type should be -- take a
-look at the `is_even` function for an example!
-
-Also: Did you figure out that, technically, `u32` would be the more fitting type
-for the inputs of the functions here, since the original prices shouldn't be negative? If so, kudos!"""
+look at the `is_even` function for an example!"""
 
 [[exercises]]
 name = "functions5"