diff --git a/samples/rust/rust_driver_auxiliary.rs b/samples/rust/rust_driver_auxiliary.rs
index 5761ea314f44..1e4fb23cfcb0 100644
--- a/samples/rust/rust_driver_auxiliary.rs
+++ b/samples/rust/rust_driver_auxiliary.rs
@@ -5,7 +5,7 @@
 //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
 
 use kernel::{
-    auxiliary, c_str,
+    auxiliary,
     device::{Bound, Core},
     devres::Devres,
     driver,
@@ -19,7 +19,7 @@ use core::any::TypeId;
 use pin_init::PinInit;
 
 const MODULE_NAME: &CStr = <LocalModule as kernel::ModuleMetadata>::NAME;
-const AUXILIARY_NAME: &CStr = c_str!("auxiliary");
+const AUXILIARY_NAME: &CStr = c"auxiliary";
 
 struct AuxiliaryDriver;