diff --git a/src/librustc_error_codes/error_codes/E0307.md b/src/librustc_error_codes/error_codes/E0307.md
index 52707b93acc86..0d29d56ea1a75 100644
--- a/src/librustc_error_codes/error_codes/E0307.md
+++ b/src/librustc_error_codes/error_codes/E0307.md
@@ -64,7 +64,7 @@ impl Trait for Foo {
 }
 ```
 
-The nightly feature [Arbintrary self types][AST] extends the accepted
+The nightly feature [Arbitrary self types][AST] extends the accepted
 set of receiver types to also include any type that can dereference to
 `Self`: