diff --git a/compiler/rustc_index/src/lib.rs b/compiler/rustc_index/src/lib.rs
index 52f354b8ecaff..cae55230b0679 100644
--- a/compiler/rustc_index/src/lib.rs
+++ b/compiler/rustc_index/src/lib.rs
@@ -17,6 +17,7 @@ mod vec;
 pub use idx::Idx;
 pub use rustc_index_macros::newtype_index;
 pub use slice::IndexSlice;
+#[doc(no_inline)]
 pub use vec::IndexVec;
 
 /// Type size assertion. The first argument is a type and the second argument is its expected size.