diff --git a/src/doc/trpl/unsized-types.md b/src/doc/trpl/unsized-types.md
index 756abeff06d35..b1a2bb5d4172f 100644
--- a/src/doc/trpl/unsized-types.md
+++ b/src/doc/trpl/unsized-types.md
@@ -38,9 +38,11 @@ impl Foo for &str {
 ```
 
 Meaning, this implementation would only work for [references][ref], and not
-other types of pointers. With this `impl`, all pointers, including (at some
-point, there are some bugs to fix first) user-defined custom smart pointers,
-can use this `impl`.
+other types of pointers. With the `impl for str`, all pointers, including (at
+some point, there are some bugs to fix first) user-defined custom smart
+pointers, can use this `impl`.
+
+[ref]: references-and-borrowing.html
 
 # ?Sized