diff --git a/docs/spec.md b/docs/spec.md
index d506eff..e1fb077 100644
--- a/docs/spec.md
+++ b/docs/spec.md
@@ -100,11 +100,11 @@ assert_eq!(encoded.as_slice(), &[
 ]);
 ```
 
-This also applies to e.g. `HashMap`, where each entry is a [tuple](#Basic%20types) of the key and value.
+This also applies to e.g. `HashMap`, where each entry is a [tuple](#basic-types) of the key and value.
 
 # String and &str
 
-Both `String` and `&str` are treated as a `Vec<u8>`. See [Collections](#Collections) for more information.
+Both `String` and `&str` are treated as a `Vec<u8>`. See [Collections](#collections) for more information.
 
 ```rs
 let str = "Hello"; // Could also be `String::new(...)`