diff --git a/rust/kernel/miscdevice.rs b/rust/kernel/miscdevice.rs
index 83ce50def5ac..3abef1b8543d 100644
--- a/rust/kernel/miscdevice.rs
+++ b/rust/kernel/miscdevice.rs
@@ -289,7 +289,7 @@ impl<T: MiscDevice> MiscdeviceVTable<T> {
     /// # Safety
     ///
     /// `kiocb` must be correspond to a valid file that is associated with a
-    /// `MiscDeviceRegistration<T>`. `iter` must be a valid `struct iov_iter` for writing.
+    /// `MiscDeviceRegistration<T>`. `iter` must be a valid `struct iov_iter` for reading.
     unsafe extern "C" fn write_iter(
         kiocb: *mut bindings::kiocb,
         iter: *mut bindings::iov_iter,