diff --git a/src/rt/io.rs b/src/rt/io.rs
index ed4af0929f..2e486665c9 100644
--- a/src/rt/io.rs
+++ b/src/rt/io.rs
@@ -253,7 +253,7 @@ impl ReadBufCursor<'_> {
         self.buf.remaining()
     }
 
-    /// Transfer bytes into `self`` from `src` and advance the cursor
+    /// Transfer bytes into `self` from `src` and advance the cursor
     /// by the number of bytes written.
     ///
     /// # Panics