diff --git a/library/alloc/src/io/read.rs b/library/alloc/src/io/read.rs
index 1fe8417d90761..58d3e7005f288 100644
--- a/library/alloc/src/io/read.rs
+++ b/library/alloc/src/io/read.rs
@@ -84,7 +84,7 @@ use crate::vec::Vec;
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(notable_trait)]
 #[cfg_attr(not(test), rustc_diagnostic_item = "IoRead")]
-#[rustc_must_implement_one_of(read, read_buf)]
+#[rustc_must_implement_one_of(read_buf, read)] // Keep this order, it's important for rust-analyzer (the preferred-to-implement method should come first).
 pub trait Read {
     /// Pull some bytes from this source into the specified buffer, returning
     /// how many bytes were read.