diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin.rs
index 4e6349c31da..252430e4e95 100644
--- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin.rs
+++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin.rs
@@ -1,3 +1,4 @@
+//! Builtin macros and attributes
 #[macro_use]
 mod quote;