diff --git a/src/doc/unstable-book/src/language-features/on-unimplemented.md b/src/doc/unstable-book/src/language-features/on-unimplemented.md
index 52969c9b896..f787f629756 100644
--- a/src/doc/unstable-book/src/language-features/on-unimplemented.md
+++ b/src/doc/unstable-book/src/language-features/on-unimplemented.md
@@ -80,7 +80,7 @@ error[E0277]: message
    = note: required by `iterate_chars`
 ```
 
-To allow for more targeted error messages, it is possible to filter the
+To allow more targeted error messages, it is possible to filter the
 application of these fields based on a variety of attributes when using
 `on`: