diff --git a/src/doc/unstable-book/src/language-features/rustc-attrs.md b/src/doc/unstable-book/src/language-features/rustc-attrs.md
index 500ae61b1dd0..01450c8fb1f9 100644
--- a/src/doc/unstable-book/src/language-features/rustc-attrs.md
+++ b/src/doc/unstable-book/src/language-features/rustc-attrs.md
@@ -1,6 +1,6 @@
 # `rustc_attrs`
 
-This feature has no tracking issue, and is therefore likely internal to
+This feature has no tracking issue, and is therefore internal to
 the compiler, not being intended for general use.
 
 ------------------------